From 1c6cd189ee4f8416961ec458aebe5449accc7aaf Mon Sep 17 00:00:00 2001
From: Roger Bell_West <roger@firedrake.org>
Date: Tue, 18 Jun 2024 10:27:04 +0100
Subject: RogerBW solutions for challenge no. 274

---
 challenge-274/roger-bell-west/crystal/ch-1.cr    |  32 ++++
 challenge-274/roger-bell-west/crystal/ch-2.cr    |  57 ++++++
 challenge-274/roger-bell-west/javascript/ch-1.js |  40 ++++
 challenge-274/roger-bell-west/javascript/ch-2.js |  93 ++++++++++
 challenge-274/roger-bell-west/kotlin/ch-1.kt     |  48 +++++
 challenge-274/roger-bell-west/kotlin/ch-2.kt     |  61 +++++++
 challenge-274/roger-bell-west/lua/ch-1.lua       |  86 +++++++++
 challenge-274/roger-bell-west/lua/ch-2.lua       | 104 +++++++++++
 challenge-274/roger-bell-west/perl/ch-1.pl       |  28 +++
 challenge-274/roger-bell-west/perl/ch-2.pl       |  57 ++++++
 challenge-274/roger-bell-west/postscript/ch-1.ps | 158 ++++++++++++++++
 challenge-274/roger-bell-west/postscript/ch-2.ps | 221 +++++++++++++++++++++++
 challenge-274/roger-bell-west/python/ch-1.py     |  33 ++++
 challenge-274/roger-bell-west/python/ch-2.py     |  47 +++++
 challenge-274/roger-bell-west/raku/ch-1.p6       |  26 +++
 challenge-274/roger-bell-west/raku/ch-2.p6       |  51 ++++++
 challenge-274/roger-bell-west/ruby/ch-1.rb       |  37 ++++
 challenge-274/roger-bell-west/ruby/ch-2.rb       |  63 +++++++
 challenge-274/roger-bell-west/rust/ch-1.rs       |  47 +++++
 challenge-274/roger-bell-west/rust/ch-2.rs       |  68 +++++++
 challenge-274/roger-bell-west/scala/ch-1.scala   |  49 +++++
 challenge-274/roger-bell-west/scala/ch-2.scala   |  65 +++++++
 challenge-274/roger-bell-west/tests.json         |  35 ++++
 23 files changed, 1506 insertions(+)
 create mode 100755 challenge-274/roger-bell-west/crystal/ch-1.cr
 create mode 100755 challenge-274/roger-bell-west/crystal/ch-2.cr
 create mode 100755 challenge-274/roger-bell-west/javascript/ch-1.js
 create mode 100755 challenge-274/roger-bell-west/javascript/ch-2.js
 create mode 100644 challenge-274/roger-bell-west/kotlin/ch-1.kt
 create mode 100644 challenge-274/roger-bell-west/kotlin/ch-2.kt
 create mode 100755 challenge-274/roger-bell-west/lua/ch-1.lua
 create mode 100755 challenge-274/roger-bell-west/lua/ch-2.lua
 create mode 100755 challenge-274/roger-bell-west/perl/ch-1.pl
 create mode 100755 challenge-274/roger-bell-west/perl/ch-2.pl
 create mode 100644 challenge-274/roger-bell-west/postscript/ch-1.ps
 create mode 100644 challenge-274/roger-bell-west/postscript/ch-2.ps
 create mode 100755 challenge-274/roger-bell-west/python/ch-1.py
 create mode 100755 challenge-274/roger-bell-west/python/ch-2.py
 create mode 100755 challenge-274/roger-bell-west/raku/ch-1.p6
 create mode 100755 challenge-274/roger-bell-west/raku/ch-2.p6
 create mode 100755 challenge-274/roger-bell-west/ruby/ch-1.rb
 create mode 100755 challenge-274/roger-bell-west/ruby/ch-2.rb
 create mode 100755 challenge-274/roger-bell-west/rust/ch-1.rs
 create mode 100755 challenge-274/roger-bell-west/rust/ch-2.rs
 create mode 100644 challenge-274/roger-bell-west/scala/ch-1.scala
 create mode 100644 challenge-274/roger-bell-west/scala/ch-2.scala
 create mode 100644 challenge-274/roger-bell-west/tests.json

diff --git a/challenge-274/roger-bell-west/crystal/ch-1.cr b/challenge-274/roger-bell-west/crystal/ch-1.cr
new file mode 100755
index 0000000000..ae0cc9b8e5
--- /dev/null
+++ b/challenge-274/roger-bell-west/crystal/ch-1.cr
@@ -0,0 +1,32 @@
+#! /usr/bin/crystal
+
+def goatlatin(a)
+  out = [] of String
+  a.split(" ").each_with_index do |word, ix|
+    c = word.split("")
+    if c[0] !~ /[aeiou]/i
+      co = c.shift;
+      c.push(co)
+    end
+    nw = c.join("")
+    nw += "ma"
+    0.upto(ix) do
+      nw += "a"
+    end
+    out.push(nw)
+  end
+  out.join(" ")
+end
+
+require "spec"
+describe "goatlatin" do
+  it "test_ex1" do
+    goatlatin("I love Perl").should eq "Imaa ovelmaaa erlPmaaaa"
+  end
+  it "test_ex2" do
+    goatlatin("Perl and Raku are friends").should eq "erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa"
+  end
+  it "test_ex3" do
+    goatlatin("The Weekly Challenge").should eq "heTmaa eeklyWmaaa hallengeCmaaaa"
+  end
+end
diff --git a/challenge-274/roger-bell-west/crystal/ch-2.cr b/challenge-274/roger-bell-west/crystal/ch-2.cr
new file mode 100755
index 0000000000..36f4fa8789
--- /dev/null
+++ b/challenge-274/roger-bell-west/crystal/ch-2.cr
@@ -0,0 +1,57 @@
+#! /usr/bin/crystal
+
+def busroute(a)
+  route = [] of Hash(Int32, Int32)
+  a.each do |rt|
+    ri = Hash(Int32, Int32).new
+    interval, offset, duration = rt
+    start = offset
+    while true
+      if start > 60 + offset
+        break
+      end
+      ri[start] = start + duration
+      start += interval
+    end
+    route.push(ri)
+  end
+  out = [] of Int32
+  0.upto(59) do |t|
+    best = Set(Int32).new
+    at = -1
+    nxt = Set(Int32).new
+    ndt = -1
+    route.each_with_index do |r, i|
+      nb = r.keys.select { |n| n >= t }.min
+      nt = r[nb]
+      if at == -1 || nt < at
+        best.clear
+        at = nt
+      end
+      if nt <= at
+        best.add(i)
+      end
+      if ndt == -1 || nb < ndt
+        nxt.clear
+        ndt = nb
+      end
+      if nb <= ndt
+        nxt.add(i)
+      end
+    end
+    if (best & nxt) .size == 0
+      out.push(t)
+    end
+  end
+  out
+end
+
+require "spec"
+describe "busroute" do
+  it "test_ex1" do
+    busroute([[12, 11, 41], [15, 5, 35]]).should eq [36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47]
+  end
+  it "test_ex2" do
+    busroute([[12, 3, 41], [15, 9, 35], [30, 5, 25]]).should eq [0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59]
+  end
+end
diff --git a/challenge-274/roger-bell-west/javascript/ch-1.js b/challenge-274/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..b300b4d51f
--- /dev/null
+++ b/challenge-274/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,40 @@
+#! /usr/bin/node
+
+"use strict"
+
+function goatlatin(a) {
+    let out = [];
+    a.split(" ").forEach((word, ix) => {
+        let c = word.split("");
+        if (!c[0].match(/[aeiou]/i)) {
+            let co = c.shift();
+            c.push(co);
+        }
+        let nw = c.join("");
+        nw += "ma";
+        for (let i = 0; i <= ix; i++) {
+            nw += "a";
+        }
+        out.push(nw)
+    });
+    return out.join(" ");
+}
+
+if (goatlatin('I love Perl') == 'Imaa ovelmaaa erlPmaaaa') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (goatlatin('Perl and Raku are friends') == 'erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (goatlatin('The Weekly Challenge') == 'heTmaa eeklyWmaaa hallengeCmaaaa') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-274/roger-bell-west/javascript/ch-2.js b/challenge-274/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..a067c154bb
--- /dev/null
+++ b/challenge-274/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,93 @@
+#! /usr/bin/node
+
+"use strict"
+
+// by Frank Tan
+// https://stackoverflow.com/questions/38400594/javascript-deep-comparison
+function deepEqual(a,b)
+{
+    if( (typeof a == 'object' && a != null) &&
+        (typeof b == 'object' && b != null) )
+    {
+        var count = [0,0];
+        for( var key in a) count[0]++;
+        for( var key in b) count[1]++;
+        if( count[0]-count[1] != 0) {return false;}
+        for( var key in a)
+        {
+            if(!(key in b) || !deepEqual(a[key],b[key])) {return false;}
+        }
+        for( var key in b)
+        {
+            if(!(key in a) || !deepEqual(b[key],a[key])) {return false;}
+        }
+        return true;
+    }
+    else
+    {
+        return a === b;
+    }
+}
+
+function busroute(a) {
+    let route = [];
+    for (let rt of a) {
+        let ri = new Map;
+        const interval = rt[0];
+        const offset = rt[1];
+        const duration = rt[2];
+        let start = offset;
+        while (true) {
+            if (start > 60 + offset) {
+                break;
+            }
+            ri.set(start, start + duration);
+            start += interval;
+        }
+        route.push(ri);
+    }
+    let out = [];
+    for (let t = 0; t < 60; t++) {
+        let best = new Set;
+        let at = -1;
+        let nxt = new Set;
+        let ndt = -1;
+        route.forEach((r, i) => {
+            const nb = Math.min(...([...r.keys()].filter(n => n >= t)));
+            const nt = r.get(nb);
+            if (at == -1 || nt < at) {
+                best = new Set;
+                at = nt;
+            }
+            if (nt <= at) {
+                best.add(i);
+            }
+            if (ndt == -1 || nb < ndt) {
+                nxt = new Set;
+                ndt = nb;
+            }
+            if (nb <= ndt) {
+                nxt.add(i);
+            }
+        });
+        const intersect = new Set([...best].filter(i => nxt.has(i)));
+        if (intersect.size == 0) {
+            out.push(t);
+        }
+    }
+    return out;
+}
+
+
+if (deepEqual(busroute([[12, 11, 41], [15, 5, 35]]), [36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(busroute([[12, 3, 41], [15, 9, 35], [30, 5, 25]]), [0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-274/roger-bell-west/kotlin/ch-1.kt b/challenge-274/roger-bell-west/kotlin/ch-1.kt
new file mode 100644
index 0000000000..5e2e3bbb4c
--- /dev/null
+++ b/challenge-274/roger-bell-west/kotlin/ch-1.kt
@@ -0,0 +1,48 @@
+fun is_vowel(c: Char): Boolean {
+    return when (c.lowercaseChar()) {
+        'a', 'e', 'i', 'o', 'u' -> true
+        else -> false
+    }
+}
+
+fun goatlatin(a: String): String {
+    var out = ArrayList<String>()
+    a.split(" ").forEachIndexed {i, word ->
+                                     var c = word.toList()
+                                 var nw = StringBuilder(word);
+                                 if (!is_vowel(c[0])) {
+                                     var co = ArrayList(c.drop(1))
+                                     co.add(c[0])
+                                     nw = StringBuilder(co.joinToString(""))
+                                 }
+                                 nw.append("ma")
+                                 for (ix in 0..i) {
+                                     nw.append("a")
+                                 }
+                                 out.add(nw.toString())
+    }
+    return out.joinToString(" ")
+}
+
+fun main() {
+
+    if (goatlatin("I love Perl") == "Imaa ovelmaaa erlPmaaaa") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (goatlatin("Perl and Raku are friends") == "erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (goatlatin("The Weekly Challenge") == "heTmaa eeklyWmaaa hallengeCmaaaa") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-274/roger-bell-west/kotlin/ch-2.kt b/challenge-274/roger-bell-west/kotlin/ch-2.kt
new file mode 100644
index 0000000000..a09d3869a4
--- /dev/null
+++ b/challenge-274/roger-bell-west/kotlin/ch-2.kt
@@ -0,0 +1,61 @@
+fun busroute(a: List<List<Int>>): List<Int> {
+    var route = ArrayList<Map<Int, Int>>()
+    for (rt in a) {
+        var ri = mutableMapOf<Int, Int>()
+        val interval = rt[0]
+        val offset = rt[1]
+        val duration = rt[2]
+        var start = offset
+        while (start <= 60 + offset) {
+            ri.put(start, start + duration)
+            start += interval
+        }
+        route.add(ri)
+    }
+    var out = ArrayList<Int>()
+    for (t in 0 .. 59) {
+        var best = mutableSetOf<Int>()
+        var at = -1
+        var nxt = mutableSetOf<Int>()
+        var ndt = -1
+        route.forEachIndexed {i, r ->
+                                  val nb = r.keys.filter{it >= t}.minOrNull()!!
+                              val nt = r.getValue(nb)
+                              if (at == -1 || nt < at) {
+                                  best = mutableSetOf<Int>()
+                                  at = nt
+                              }
+                              if (nt <= at) {
+                                  best.add(i)
+                              }
+                              if (ndt == -1 || nb < ndt) {
+                                  nxt = mutableSetOf<Int>()
+                                  ndt = nb
+                              }
+                              if (nb <= ndt) {
+                                  nxt.add(i)
+                              }
+        }
+        if (best.intersect(nxt).isEmpty()) {
+            out.add(t)
+        }
+    }
+    return out.toList()
+}
+
+fun main() {
+
+    if (busroute(listOf(listOf(12, 11, 41), listOf(15, 5, 35))) == listOf(36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (busroute(listOf(listOf(12, 3, 41), listOf(15, 9, 35), listOf(30, 5, 25))) == listOf(0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-274/roger-bell-west/lua/ch-1.lua b/challenge-274/roger-bell-west/lua/ch-1.lua
new file mode 100755
index 0000000000..1127f03cb4
--- /dev/null
+++ b/challenge-274/roger-bell-west/lua/ch-1.lua
@@ -0,0 +1,86 @@
+#! /usr/bin/lua
+
+-- bart at https://stackoverflow.com/questions/1426954/split-string-in-lua
+function splits(inputstr, sep)
+   sep=sep or '%s'
+   local t={}
+   for field,s in string.gmatch(inputstr, "([^"..sep.."]*)("..sep.."?)") do
+      table.insert(t,field)
+      if s=="" then
+         return t
+      end
+   end
+end
+
+function split(t)
+   local cl = {}
+   string.gsub(t,
+               "(.)",
+               function(c)
+                  table.insert(cl, c)
+               end
+   )
+   return cl
+end
+
+function join(t)
+   local out=""
+   for i, v in ipairs(t) do
+      out = out .. v
+   end
+   return out
+end
+
+function joins(t,pad)
+   local out=""
+   local later = false
+   for k,v in pairs(t) do
+      if later then
+         out = out .. pad
+      end
+      out = out .. v
+      later = true
+   end
+   return out
+end
+
+function goatlatin(a)
+   local out = {}
+   for ix, word in ipairs(splits(a, " ")) do
+      local nw = word
+      local c = split(word)
+      if string.match(c[1], "[^aeiouAEIOU]") then
+         table.insert(c, c[1])
+         table.remove(c, 1)
+         nw = join(c)
+      end
+      nw = nw .. "ma"
+      for i = 1, ix do
+         nw = nw .. "a"
+      end
+      table.insert(out, nw)
+   end
+   return joins(out, " ")
+end
+
+if goatlatin("I love Perl") == "Imaa ovelmaaa erlPmaaaa" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if goatlatin("Perl and Raku are friends") == "erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if goatlatin("The Weekly Challenge") == "heTmaa eeklyWmaaa hallengeCmaaaa" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-274/roger-bell-west/lua/ch-2.lua b/challenge-274/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..2f50581f13
--- /dev/null
+++ b/challenge-274/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,104 @@
+#! /usr/bin/lua
+
+-- by Michael Anderson at
+-- https://stackoverflow.com/questions/8722620/comparing-two-index-tables-by-index-value-in-lua
+-- modified by Roger
+function recursive_compare(t1,t2)
+  -- Use usual comparison first.
+  if t1==t2 then return true end
+  -- We only support non-default behavior for tables
+  if (type(t1)~="table") then return false end
+  -- They better have the same metatables
+  local mt1 = getmetatable(t1)
+  local mt2 = getmetatable(t2)
+  if( not recursive_compare(mt1,mt2) ) then return false end
+  -- Build list of all keys
+  local kk = {}
+  for k1, _ in pairs(t1) do
+     kk[k1] = true
+  end
+  for k2, _ in pairs(t2) do
+     kk[k2] = true
+  end
+  -- Check each key that exists in at least one table
+  for _, k in ipairs(kk) do
+     if (not recursive_compare(t1[k], t2[k])) then
+        return false
+     end
+  end
+  return true
+end
+
+function busroute(a)
+   local routes = {}
+   for _, rt in ipairs(a) do
+      local ri = {}
+      local interval = rt[1]
+      local offset = rt[2]
+      local duration = rt[3]
+      local start = offset
+      while start <= 60 + offset do
+         ri[start] = start + duration
+         start = start + interval
+      end
+      table.insert(routes, rt)
+   end
+   local out = {}
+   for t = 0, 59 do
+      local best = {}
+      local at = -1
+      local nxt = {}
+      local ndt = -1
+      for i, r in ipairs(routes) do
+         local nb = 999
+         local nt = 0
+         for n, l in ipairs(r) do
+            if n >= t then
+               if l < nb then
+                  nb = n
+                  nt = l
+               end
+            end
+         end
+         if at == -1 or nt < at then
+            best = {}
+            at = nt
+         end
+         if nt <= at then
+            best[i] = true
+         end
+         if ndt == -1 or nb < ndt then
+            nxt = {}
+            ndt = nb
+         end
+         if nb <= ndt then
+            nxt[i] = true
+         end
+      end
+      local intersect = {}
+      for k, v in pairs(best) do
+         if nxt[k] ~= nil then
+            table.insert(intersect, k)
+         end
+      end
+      if #intersect == 0 then
+         table.insert(out, t)
+      end
+   end
+   return out
+end
+
+if recursive_compare(busroute({{12, 11, 41}, {15, 5, 35}}), {36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(busroute({{12, 3, 41}, {15, 9, 35}, {30, 5, 25}}), {0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-274/roger-bell-west/perl/ch-1.pl b/challenge-274/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..6cb6190b8c
--- /dev/null
+++ b/challenge-274/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,28 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is(goatlatin('I love Perl'), 'Imaa ovelmaaa erlPmaaaa', 'example 1');
+is(goatlatin('Perl and Raku are friends'), 'erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa', 'example 2');
+is(goatlatin('The Weekly Challenge'), 'heTmaa eeklyWmaaa hallengeCmaaaa', 'example 3');
+
+sub goatlatin($a) {
+  my @out;
+  my @w = split ' ', $a;
+  while (my ($ix, $word) = each @w) {
+    my @c = split '',$word;
+    my $nw = $word;
+    if ($c[0] !~ /[aeiou]/i) {
+      push @c,shift @c;
+      $nw = join('', @c);
+    }
+    $nw .= 'ma';
+    $nw .= 'a' x ($ix + 1);
+    push @out, $nw;
+  }
+  return join(' ', @out);
+}
diff --git a/challenge-274/roger-bell-west/perl/ch-2.pl b/challenge-274/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..5a3ee1c7ae
--- /dev/null
+++ b/challenge-274/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,57 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 2;
+
+is_deeply(busroute([[12, 11, 41], [15, 5, 35]]), [36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47], 'example 1');
+is_deeply(busroute([[12, 3, 41], [15, 9, 35], [30, 5, 25]]), [0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59], 'example 2');
+
+use List::Util qw(min);
+
+sub busroute($a) {
+  my @routes;
+  foreach my $rt (@{$a}) {
+    my %ri;
+    my ($interval, $offset, $duration) = @{$rt};
+    my $start = $offset;
+    while ($start <= 60 + $offset) {
+      $ri{$start} = $start + $duration;
+      $start += $interval;
+    }
+    push @routes, \%ri;
+  }
+  my @out;
+  foreach my $t (0 .. 59) {
+    my %best;
+    my $at = -1;
+    my %nxt;
+    my $ndt = -1;
+    values @routes;
+    while (my ($i, $r) = each @routes) {
+      my $nb = min grep {$_ >= $t} keys(%{$r});
+      my $nt = $r->{$nb};
+      if ($at == -1 || $nt < $at) {
+        %best = ();
+        $at = $nt;
+      }
+      if ($nt <= $at) {
+        $best{$i} = 1;
+      }
+      if ($ndt == -1 || $nb < $ndt) {
+        %nxt = ();
+        $ndt = $nb;
+      }
+      if ($nb <= $ndt) {
+        $nxt{$i} = 1;
+      }
+    }
+    my @intersect = grep {exists $nxt{$_}} keys %best;
+    if (scalar @intersect == 0) {
+      push @out, $t;
+    }
+  }
+  return \@out;
+}
diff --git a/challenge-274/roger-bell-west/postscript/ch-1.ps b/challenge-274/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..09be170853
--- /dev/null
+++ b/challenge-274/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,158 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/Firedrake/postscript-libraries/
+/strconcat % (a) (b) -> (ab)  
+{
+    [
+        3 -1 roll
+        s2a aload length
+        2 add -1 roll
+        s2a aload pop
+    ] a2s
+} bind def
+
+/a2s {
+    2 dict begin
+    /i exch def
+    i length dup string /o exch def
+    1 sub 0 exch 1 exch {
+        dup i 3 -1 roll get o 3 1 roll put
+    } for
+    o
+    end
+} bind def
+
+
+/test.end {
+    ( ) print
+    test.count 0 gt {
+        (Passed ) print
+        test.pass (...) cvs print
+        (/) print
+        test.count (...) cvs print
+        ( \() print
+        test.pass 100 mul test.count idiv (...) cvs print
+        (%\)) print
+        (\r\n) print
+    } if
+} bind def
+
+/toset { % array -> dict of (value, true)
+    << exch
+       {
+           true
+       } forall
+    >>
+} bind def
+
+/test.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+/test {
+    /test.count test.count 1 add def
+    {
+        /test.pass test.pass 1 add def
+    } {
+        ( ) print
+        test.count (....) cvs print
+        (-fail) print
+    } ifelse
+} bind def
+
+/enumerate.array {
+    1 dict begin
+    /a exch def
+    [
+      0 1 a length 1 sub {
+          [ exch dup a exch get ]
+      } for
+    ]
+    end
+} bind def
+
+/strsplit % (ajbjc) (j) -> [ (a) (b) (c) ]
+{
+    1 dict begin
+    /sep exch def
+    [ exch
+      {
+          dup length 0 eq {
+              pop
+              exit
+          } {
+              sep search {
+                  exch pop
+                  dup length 0 eq {
+                      pop
+                  } {
+                      exch
+                  } ifelse
+              } {
+                  ()
+              } ifelse
+          } ifelse
+      } loop
+    ]
+    end
+} bind def
+
+/s2a {
+    [ exch { } forall ]
+} bind def
+
+/strjoin % [(a) (b) (c)] (j) -> (ajbjc)
+{
+    3 dict begin
+    /j exch def
+    dup 0 get /out exch def
+    /first true def
+    {
+        first {
+            pop
+            /first false def
+        } {
+            out j strconcat
+            exch strconcat
+            /out exch def
+        } ifelse
+    } forall
+    out
+    end
+} bind def
+
+
+% end included library code
+
+/goatlatin {
+    0 dict begin
+    /vowels (aeiouAEIOU) s2a toset def
+    [ exch
+      ( ) strsplit enumerate.array {
+          aload pop
+          /c exch s2a def
+          /i exch def
+          [
+              c aload pop
+              vowels c 0 get known not {
+                  c length -1 roll
+              } if
+              109
+              97
+              i 1 add {
+                  97
+              } repeat
+          ] a2s
+      } forall
+    ] ( ) strjoin
+    end
+} bind def
+
+(goatlatin) test.start
+(I love Perl) goatlatin (Imaa ovelmaaa erlPmaaaa) eq test
+(Perl and Raku are friends) goatlatin (erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa) eq test
+(The Weekly Challenge) goatlatin (heTmaa eeklyWmaaa hallengeCmaaaa) eq test
+test.end
diff --git a/challenge-274/roger-bell-west/postscript/ch-2.ps b/challenge-274/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..f34399caf4
--- /dev/null
+++ b/challenge-274/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,221 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/Firedrake/postscript-libraries/
+/test.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+/set.intersection {
+    4 dict begin
+    /s 0 dict def
+    /b exch def
+    /a exch def
+    a keys {
+        /k exch def
+        b k known {
+            s k true put
+        } if
+    } forall
+    s
+    end
+} bind def
+
+/test.end {
+    ( ) print
+    test.count 0 gt {
+        (Passed ) print
+        test.pass (...) cvs print
+        (/) print
+        test.count (...) cvs print
+        ( \() print
+        test.pass 100 mul test.count idiv (...) cvs print
+        (%\)) print
+        (\r\n) print
+    } if
+} bind def
+
+/keys { % dict -> array of dict keys
+    [ exch
+      {
+          pop
+      } forall
+    ]
+} bind def
+
+/deepeq {
+    2 dict begin
+    /a exch def
+    /b exch def
+    a type b type eq {
+        a type /dicttype eq {
+            a length b length eq {
+                <<
+                    a {
+                        pop
+                        true
+                    } forall
+                    b {
+                        pop
+                        true
+                    } forall
+                >>
+                true exch
+                {
+                    pop
+                    dup a exch known {
+                        dup b exch known {
+                            dup a exch get exch b exch get deepeq not {
+                                pop false
+                            } if
+                        } {
+                            false
+                        } ifelse
+                    } {
+                        false
+                    } ifelse
+                } forall
+            } {
+                false
+            } ifelse
+        } {
+            a type dup /arraytype eq exch /stringtype eq or {
+                a length b length eq {
+                    true
+                    0 1 a length 1 sub {
+                        dup a exch get exch b exch get deepeq not {
+                            pop false
+                            exit
+                        } if
+                    } for
+                } {
+                    false
+                } ifelse
+            } {
+                a b eq
+            } ifelse
+        } ifelse
+    } {
+        false
+    } ifelse
+    end
+} bind def
+
+/reduce { % array proc -> value
+    2 dict begin
+    /p exch def
+    /a exch def
+    a 0 get
+    1 1 a length 1 sub {
+        a exch get
+        p
+    } for
+    end
+} bind def
+
+/listmin {
+    { min } reduce
+} bind def
+
+/test {
+    /test.count test.count 1 add def
+    {
+        /test.pass test.pass 1 add def
+    } {
+        ( ) print
+        test.count (....) cvs print
+        (-fail) print
+    } ifelse
+} bind def
+
+/enumerate.array {
+    1 dict begin
+    /a exch def
+    [
+      0 1 a length 1 sub {
+          [ exch dup a exch get ]
+      } for
+    ]
+    end
+} bind def
+
+/filter { % array proc(bool) -> array
+    1 dict begin
+    /p exch def
+    [ exch
+      {
+          dup p not
+          {
+              pop
+          } if
+      } forall
+    ]
+    end
+} bind def
+
+
+% end included library code
+
+/busroute {
+    0 dict begin
+    /routes exch
+    [ exch
+      {
+          aload pop
+          /duration exch def
+          /offset exch def
+          /interval exch def
+          /ri 0 dict def
+          /start offset def
+          {
+              start offset 60 add gt {
+                  exit
+              } if
+              ri start dup duration add put
+              /start start interval add def
+          } loop
+          ri
+      } forall
+    ] def
+    [
+        0 1 59 {
+            /t exch def
+            /best 0 dict def
+            /at -1 def
+            /nxt 0 dict def
+            /ndt -1 def
+            routes enumerate.array {
+                aload pop
+                /r exch def
+                /i exch def
+                /nb r keys { t ge } filter listmin def
+                /nt r nb get def
+                at -1 eq nt at lt or {
+                    /best 0 dict def
+                    /at nt def
+                } if
+                nt at le {
+                    best i true put
+                } if
+                ndt -1 eq nb ndt lt or {
+                    /nxt 0 dict def
+                    /ndt nb def
+                } if
+                nb ndt le {
+                    nxt i true put
+                } if
+            } forall
+            best nxt set.intersection length 0 eq {
+                t
+            } if
+        } for
+    ]
+    end
+} bind def
+
+(busroute) test.start
+[[12 11 41] [15 5 35]] busroute [36 37 38 39 40 41 42 43 44 45 46 47] deepeq test
+[[12 3 41] [15 9 35] [30 5 25]] busroute [0 1 2 3 25 26 27 40 41 42 43 44 45 46 47 48 49 50 51 55 56 57 58 59] deepeq test
+test.end
diff --git a/challenge-274/roger-bell-west/python/ch-1.py b/challenge-274/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..50bbf1ed06
--- /dev/null
+++ b/challenge-274/roger-bell-west/python/ch-1.py
@@ -0,0 +1,33 @@
+#! /usr/bin/python3
+
+def goatlatin(a):
+  out = []
+  for ix, word in enumerate(a.split(" ")):
+    nw = word
+    match word[0].lower():
+      case 'a' | 'e' | 'i' | 'o' | 'u':
+        True
+      case _:
+        nw = word[1:]
+        nw += word[0]
+    nw += "ma"
+    for i in range(ix + 1):
+      nw += "a"
+    out.append(nw)
+  return " ".join(out)
+
+
+import unittest
+
+class TestGoatlatin(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(goatlatin("I love Perl"), "Imaa ovelmaaa erlPmaaaa", 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(goatlatin("Perl and Raku are friends"), "erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa", 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(goatlatin("The Weekly Challenge"), "heTmaa eeklyWmaaa hallengeCmaaaa", 'example 3')
+
+unittest.main()
diff --git a/challenge-274/roger-bell-west/python/ch-2.py b/challenge-274/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..fd00b3f58a
--- /dev/null
+++ b/challenge-274/roger-bell-west/python/ch-2.py
@@ -0,0 +1,47 @@
+#! /usr/bin/python3
+
+def busroute(a):
+  routes = []
+  for rt in a:
+    ri = dict()
+    (interval, offset, duration) = rt
+    start = offset
+    while start <= 60 + offset:
+      ri[start] = start + duration
+      start += interval
+    routes.append(ri)
+  out = []
+  for t in range(60):
+    best = set()
+    at = -1
+    nxt = set()
+    ndt = -1
+    for i, r in enumerate(routes):
+      nb = min([n for n in r.keys() if n >= t])
+      nt = r[nb]
+      if at == -1 or nt < at:
+        best.clear()
+        at = nt
+      if nt <= at:
+        best.add(i)
+      if ndt == -1 or nb < ndt:
+        nxt.clear()
+        ndt = nb
+      if nb <= ndt:
+        nxt.add(i)
+    if len(best.intersection(nxt)) == 0:
+      out.append(t)
+  return out
+      
+
+import unittest
+
+class TestBusroute(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(busroute([[12, 11, 41], [15, 5, 35]]), [36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(busroute([[12, 3, 41], [15, 9, 35], [30, 5, 25]]), [0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59], 'example 2')
+
+unittest.main()
diff --git a/challenge-274/roger-bell-west/raku/ch-1.p6 b/challenge-274/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..7b0840ed0e
--- /dev/null
+++ b/challenge-274/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,26 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is(goatlatin('I love Perl'), 'Imaa ovelmaaa erlPmaaaa', 'example 1');
+is(goatlatin('Perl and Raku are friends'), 'erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa', 'example 2');
+is(goatlatin('The Weekly Challenge'), 'heTmaa eeklyWmaaa hallengeCmaaaa', 'example 3');
+
+sub goatlatin($a) {
+    my @out;
+    my @w = $a.split(' ');
+    for @w.kv -> $ix, $word {
+        my @c = $word.comb;
+        my $nw = $word;
+        if (@c[0] !~~ m:i/<[aeiou]>/) {
+            @c.push(@c.shift);
+            $nw = @c.join('');
+        }
+        $nw ~= 'ma';
+        $nw ~= 'a' x ($ix + 1);
+        @out.push($nw);
+    }
+    return @out.join(' ');
+}
diff --git a/challenge-274/roger-bell-west/raku/ch-2.p6 b/challenge-274/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..e30c59ec5c
--- /dev/null
+++ b/challenge-274/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,51 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 2;
+
+is-deeply(busroute([[12, 11, 41], [15, 5, 35]]), [36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47], 'example 1');
+is-deeply(busroute([[12, 3, 41], [15, 9, 35], [30, 5, 25]]), [0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59], 'example 2');
+
+sub busroute(@a) {
+    my @routes;
+    for @a -> @rt {
+        my %ri;
+        my ($interval, $offset, $duration) = @rt;
+        my $start = $offset;
+        while ($start <= 60 + $offset) {
+            %ri{$start} = $start + $duration;
+            $start += $interval;
+        }
+        @routes.push(%ri);
+    }
+    my @out;
+    for 0 .. 59 -> $t {
+        my %best = SetHash.new;
+        my $at = -1;
+        my %nxt = SetHash.new;
+        my $ndt = -1;
+        for @routes.kv -> $i, %r {
+            my $nb = %r.keys.grep({$_ >= $t}).min({ 0 + $_});
+            my $nt = %r{$nb};
+            if ($at == -1 || $nt < $at) {
+                %best = SetHash.new;
+                $at = $nt;
+            }
+            if ($nt <= $at) {
+                %best{$i}++;
+            }
+            if ($ndt == -1 || $nb < $ndt) {
+                %nxt = SetHash.new;
+                $ndt = $nb;
+            }
+            if ($nb <= $ndt) {
+                %nxt{$i}++
+            }
+        }
+        if ((%best (&) %nxt).elems == 0) {
+            @out.push($t);
+        }
+    }
+    return @out;
+}
diff --git a/challenge-274/roger-bell-west/ruby/ch-1.rb b/challenge-274/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..136f23756a
--- /dev/null
+++ b/challenge-274/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,37 @@
+#! /usr/bin/ruby
+
+def goatlatin(a)
+  out = []
+  a.split(" ").each_with_index do |word, ix|
+    c = word.split("")
+    if c[0] !~ /[aeiou]/i
+      co = c.shift;
+      c.push(co)
+    end
+    nw = c.join("")
+    nw += "ma"
+    0.upto(ix) do
+      nw += "a"
+    end
+    out.push(nw)
+  end
+  return out.join(" ")
+end
+
+require 'test/unit'
+
+class TestGoatlatin < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal('Imaa ovelmaaa erlPmaaaa', goatlatin('I love Perl'))
+  end
+
+  def test_ex2
+    assert_equal('erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa', goatlatin('Perl and Raku are friends'))
+  end
+
+  def test_ex3
+    assert_equal('heTmaa eeklyWmaaa hallengeCmaaaa', goatlatin('The Weekly Challenge'))
+  end
+
+end
diff --git a/challenge-274/roger-bell-west/ruby/ch-2.rb b/challenge-274/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..6991fe90fe
--- /dev/null
+++ b/challenge-274/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,63 @@
+#! /usr/bin/ruby
+
+require 'set'
+
+def busroute(a)
+  route = []
+  a.each do |rt|
+    ri = Hash.new
+    (interval, offset, duration) = rt
+    start = offset
+    while true do
+      if start > 60 + offset then
+        break
+      end
+      ri[start] = start + duration
+      start += interval
+    end
+    route.push(ri)
+  end
+  out = []
+  0.upto(59) do |t|
+    best = Set.new
+    at = -1
+    nxt = Set.new
+    ndt = -1
+    route.each_with_index do |r, i|
+      nb = r.keys.select { |n| n >= t }.min
+      nt = r[nb]
+      if at == -1 || nt < at
+        best = Set.new
+        at = nt
+      end
+      if nt <= at
+        best.add(i)
+      end
+      if ndt == -1 || nb < ndt
+        nxt = Set.new
+        ndt = nb
+      end
+      if nb <= ndt
+        nxt.add(i)
+      end
+    end
+    if (best & nxt) .length == 0
+      out.push(t)
+    end
+  end
+  return out
+end
+
+require 'test/unit'
+
+class TestBusroute < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal([36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47], busroute([[12, 11, 41], [15, 5, 35]]))
+  end
+
+  def test_ex2
+    assert_equal([0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59], busroute([[12, 3, 41], [15, 9, 35], [30, 5, 25]]))
+  end
+
+end
diff --git a/challenge-274/roger-bell-west/rust/ch-1.rs b/challenge-274/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..0725ec20e0
--- /dev/null
+++ b/challenge-274/roger-bell-west/rust/ch-1.rs
@@ -0,0 +1,47 @@
+#! /bin/sh
+//usr/bin/env rustc --test $0 -o ${0}x && ./${0}x --nocapture; rm -f ${0}x ; exit
+
+#[test]
+fn test_ex1() {
+    assert_eq!(goatlatin("I love Perl"), "Imaa ovelmaaa erlPmaaaa");
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(
+        goatlatin("Perl and Raku are friends"),
+        "erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa"
+    );
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(
+        goatlatin("The Weekly Challenge"),
+        "heTmaa eeklyWmaaa hallengeCmaaaa"
+    );
+}
+
+fn goatlatin(a: &str) -> String {
+    let mut out = Vec::new();
+    for (ix, word) in a.split(' ').enumerate() {
+        let mut c = word.chars().collect::<Vec<_>>();
+        let cc = c[0].to_ascii_lowercase();
+        match cc {
+            'a' | 'e' | 'i' | 'o' | 'u' => {}
+            _ => {
+                let co = c[0];
+                let k = c.split_off(1);
+                c = k;
+                c.push(co);
+            }
+        };
+        let mut nw = c.iter().collect::<String>();
+        nw.push_str("ma");
+        for _ in 0..=ix {
+            nw.push('a');
+        }
+        out.push(nw);
+    }
+    out.join(" ")
+}
diff --git a/challenge-274/roger-bell-west/rust/ch-2.rs b/challenge-274/roger-bell-west/rust/ch-2.rs
new file mode 100755
index 0000000000..24d2145ebf
--- /dev/null
+++ b/challenge-274/roger-bell-west/rust/ch-2.rs
@@ -0,0 +1,68 @@
+#! /bin/sh
+//usr/bin/env rustc --test $0 -o ${0}x && ./${0}x --nocapture; rm -f ${0}x ; exit
+
+use std::collections::{HashMap, HashSet};
+
+#[test]
+fn test_ex1() {
+    assert_eq!(
+        busroute(vec![vec![12, 11, 41], vec![15, 5, 35]]),
+        vec![36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47]
+    );
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(
+        busroute(vec![vec![12, 3, 41], vec![15, 9, 35], vec![30, 5, 25]]),
+        vec![
+            0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
+            51, 55, 56, 57, 58, 59
+        ]
+    );
+}
+
+fn busroute(a: Vec<Vec<u32>>) -> Vec<u32> {
+    let mut routes = Vec::new();
+    for rt in a {
+        let mut ri = HashMap::new();
+        let interval = rt[0];
+        let offset = rt[1];
+        let duration = rt[2];
+        let mut start = offset;
+        while start <= 60 + offset {
+            ri.insert(start, start + duration);
+            start += interval;
+        }
+        routes.push(ri);
+    }
+    let mut out = Vec::new();
+    for t in 0..60 {
+        let mut best = HashSet::new();
+        let mut at: Option<u32> = None;
+        let mut nxt = HashSet::new();
+        let mut ndt: Option<u32> = None;
+        for (i, r) in routes.iter().enumerate() {
+            let nb = r.keys().filter(|n| **n >= t).min().unwrap();
+            let nt = r.get(nb).unwrap();
+            if at.is_none() || *nt < at.unwrap() {
+                best.clear();
+                at = Some(*nt);
+            }
+            if *nt <= at.unwrap() {
+                best.insert(i);
+            }
+            if ndt.is_none() || *nb < ndt.unwrap() {
+                nxt.clear();
+                ndt = Some(*nb);
+            }
+            if *nb <= ndt.unwrap() {
+                nxt.insert(i);
+            }
+        }
+        if best.intersection(&nxt).count() == 0 {
+            out.push(t);
+        }
+    }
+    out
+}
diff --git a/challenge-274/roger-bell-west/scala/ch-1.scala b/challenge-274/roger-bell-west/scala/ch-1.scala
new file mode 100644
index 0000000000..2eae2e585b
--- /dev/null
+++ b/challenge-274/roger-bell-west/scala/ch-1.scala
@@ -0,0 +1,49 @@
+import scala.collection.mutable.ListBuffer
+
+object Goatlatin {
+  def is_vowel(c: Char): Boolean = {
+    return c.toLower match {
+      case 'a' | 'e' | 'i' | 'o' | 'u' => true
+      case _ => false
+    }
+  }
+  def goatlatin(a: String): String = {
+    var out = new ListBuffer[String];
+    for ((word, i) <- a.split(" ").zipWithIndex){
+      var c = word.toList
+      var nw = word;
+      if (!is_vowel(c(0))) {
+        var co = c.tail.to[ListBuffer];
+        co += c.head;
+        nw = co.mkString;
+      }
+      nw += "ma";
+      for (ix <- 0 to i) {
+        nw += "a";
+      }
+      out += nw;
+    }
+    out.mkString(" ")
+  }
+  def main(args: Array[String]) {
+    if (goatlatin("I love Perl") == "Imaa ovelmaaa erlPmaaaa") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (goatlatin("Perl and Raku are friends") == "erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (goatlatin("The Weekly Challenge") == "heTmaa eeklyWmaaa hallengeCmaaaa") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    println("")
+
+  }
+}
diff --git a/challenge-274/roger-bell-west/scala/ch-2.scala b/challenge-274/roger-bell-west/scala/ch-2.scala
new file mode 100644
index 0000000000..b24c81eac4
--- /dev/null
+++ b/challenge-274/roger-bell-west/scala/ch-2.scala
@@ -0,0 +1,65 @@
+import scala.collection.mutable
+import scala.collection.mutable.ListBuffer
+
+object Busroute {
+  def busroute(a: List[List[Int]]): List[Int] = {
+    var route = new ListBuffer[mutable.Map[Int, Int]];
+    for (rt <- a) {
+      var ri = mutable.Map.empty[Int, Int];
+      val interval = rt(0);
+      val offset = rt(1);
+      val duration = rt(2);
+      var start = offset;
+      val end = 61 + offset;
+      while (start < end) {
+        ri += (start -> (start + duration));
+        start += interval;
+      }
+      route += ri;
+    }
+    var out = new ListBuffer[Int];
+    for (t <- 0 until 60) {
+      var best = mutable.Set.empty[Int];
+      var at = -1;
+      var nxt = mutable.Set.empty[Int];
+      var ndt = -1;
+      for ((r, i) <- route.zipWithIndex) {
+        val nb = r.keys.filter(n => n >= t).min;
+        val nt = r(nb);
+        if (at == -1 || nt < at) {
+          best.clear;
+          at = nt;
+        }
+        if (nt <= at) {
+          best += i;
+        }
+        if (ndt == -1 || nb < ndt) {
+          nxt.clear;
+          ndt = nb;
+        }
+        if (nb <= ndt) {
+          nxt += i;
+        }
+      }
+      if ((best & nxt).size == 0) {
+        out += t;
+      }
+    }
+    return out.toList;
+  }
+  def main(args: Array[String]) {
+    if (busroute(List(List(12, 11, 41), List(15, 5, 35))) == List(36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)) {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (busroute(List(List(12, 3, 41), List(15, 9, 35), List(30, 5, 25))) == List(0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59)) {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    println("")
+
+  }
+}
diff --git a/challenge-274/roger-bell-west/tests.json b/challenge-274/roger-bell-west/tests.json
new file mode 100644
index 0000000000..19f9a04763
--- /dev/null
+++ b/challenge-274/roger-bell-west/tests.json
@@ -0,0 +1,35 @@
+{
+    "ch-1" : [
+        {
+            "function" : "goatlatin",
+            "arguments" : "I love Perl",
+            "result" : "Imaa ovelmaaa erlPmaaaa"
+        },
+        {
+            "arguments" : "Perl and Raku are friends",
+            "result" : "erlPmaa andmaaa akuRmaaaa aremaaaaa riendsfmaaaaaa"
+        },
+        {
+            "arguments" : "The Weekly Challenge",
+            "result" : "heTmaa eeklyWmaaa hallengeCmaaaa"
+        }
+    ],
+    "ch-2" : [
+        {
+            "function" : "busroute",
+            "arguments" : [
+                [ 12, 11, 41 ],
+                [ 15, 5, 35 ]
+            ],
+            "result" : [ 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47 ]
+        },
+        {
+            "arguments" : [
+                [ 12, 3, 41 ],
+                [ 15, 9, 35 ],
+                [ 30, 5, 25 ]
+            ],
+            "result" : [ 0, 1, 2, 3, 25, 26, 27, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 56, 57, 58, 59 ]
+        }
+    ]
+}
-- 
cgit