RogerBW solutions for challenge no. 278

23 files changed, 998 insertions, 0 deletions

diff --git a/challenge-278/roger-bell-west/crystal/ch-1.cr b/challenge-278/roger-bell-west/crystal/ch-1.cr
new file mode 100755
index 0000000000..702e2de4a1
--- /dev/null
+++ b/challenge-278/roger-bell-west/crystal/ch-1.cr
@@ -0,0 +1,25 @@
+#! /usr/bin/crystal
+require "spec"
+describe "sortstring" do
+  it "test_ex1" do
+    sortstring("and2 Raku3 cousins5 Perl1 are4").should eq "Perl and Raku are cousins"
+  end
+  it "test_ex2" do
+    sortstring("guest6 Python1 most4 the3 popular5 is2 language7").should eq "Python is the most popular guest language"
+  end
+  it "test_ex3" do
+    sortstring("Challenge3 The1 Weekly2").should eq "The Weekly Challenge"
+  end
+end
+
+def sortstring(a)
+  words = a.split(" ")
+  out = words.clone
+  words.each do |w|
+    if md = /^(.*?)([0-9]+)$/.match(w)
+      ix = md[2].to_i - 1
+      out[ix] = md[1]
+    end
+  end
+  out.join(" ")
+end
diff --git a/challenge-278/roger-bell-west/crystal/ch-2.cr b/challenge-278/roger-bell-west/crystal/ch-2.cr
new file mode 100755
index 0000000000..5b4260b6e0
--- /dev/null
+++ b/challenge-278/roger-bell-west/crystal/ch-2.cr
@@ -0,0 +1,24 @@
+#! /usr/bin/crystal
+require "spec"
+describe "reverseword" do
+  it "test_ex1" do
+    reverseword("challenge", "e").should eq "acehllnge"
+  end
+  it "test_ex2" do
+    reverseword("programming", "a").should eq "agoprrmming"
+  end
+  it "test_ex3" do
+    reverseword("champion", "b").should eq "champion"
+  end
+end
+
+def reverseword(a, c)
+  mm = a.index(c)
+  if mm.nil?
+    return a
+  end
+  b = a[0, mm + 1].split("")
+  b.sort!()
+  b.concat(a[mm + 1, a.size - mm].split("") )
+  b.join("")
+end
diff --git a/challenge-278/roger-bell-west/javascript/ch-1.js b/challenge-278/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..28aaf1df4e
--- /dev/null
+++ b/challenge-278/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,34 @@
+#! /usr/bin/node
+
+"use strict"
+
+function sortstring(a) {
+    let words = a.split(" ");
+    let out = Array(words.length);
+    const re = /^(.*?)([0-9]+)$/;
+    for (let w of words) {
+        let match = w.match(re);
+        let index = match[2] - 1;
+        out[index] = match[1];
+    }
+    return out.join(" ");
+}
+
+if (sortstring('and2 Raku3 cousins5 Perl1 are4') == 'Perl and Raku are cousins') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (sortstring('guest6 Python1 most4 the3 popular5 is2 language7') == 'Python is the most popular guest language') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (sortstring('Challenge3 The1 Weekly2') == 'The Weekly Challenge') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-278/roger-bell-west/javascript/ch-2.js b/challenge-278/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..b0911c99fa
--- /dev/null
+++ b/challenge-278/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,33 @@
+#! /usr/bin/node
+
+"use strict"
+
+function reverseword(a, c) {
+    const m = a.indexOf(c);
+    if (m == -1) {
+        return a;
+    }
+    let b = a.slice(0, m + 1).split("");
+    b.sort();
+    b.push(...a.slice(m + 1).split(""));
+    return b.join("");
+}
+
+if (reverseword('challenge', 'e') == 'acehllnge') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (reverseword('programming', 'a') == 'agoprrmming') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (reverseword('champion', 'b') == 'champion') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-278/roger-bell-west/kotlin/ch-1.kt b/challenge-278/roger-bell-west/kotlin/ch-1.kt
new file mode 100644
index 0000000000..d1eefad642
--- /dev/null
+++ b/challenge-278/roger-bell-west/kotlin/ch-1.kt
@@ -0,0 +1,34 @@
+fun sortstring(a: String): String {
+    var words = a.split(" ")
+    var out = ArrayList<String>(words)
+    val re = "^(.*?)([0-9]+)$".toRegex()
+    for (w in words) {
+        val mr = re.find(w)
+        var index = mr!!.groupValues[2].toInt() - 1
+        out[index] = mr.groupValues[1]
+    }
+    return out.joinToString(" ")
+}
+
+fun main() {
+
+    if (sortstring("and2 Raku3 cousins5 Perl1 are4") == "Perl and Raku are cousins") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (sortstring("guest6 Python1 most4 the3 popular5 is2 language7") == "Python is the most popular guest language") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (sortstring("Challenge3 The1 Weekly2") == "The Weekly Challenge") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-278/roger-bell-west/kotlin/ch-2.kt b/challenge-278/roger-bell-west/kotlin/ch-2.kt
new file mode 100644
index 0000000000..edf4b3633f
--- /dev/null
+++ b/challenge-278/roger-bell-west/kotlin/ch-2.kt
@@ -0,0 +1,33 @@
+fun reverseword(a: String, c: Char): String {
+    val m = a.indexOf(c)
+    if (m == -1) {
+        return a
+    }
+    var b = ArrayList(a.slice(0 .. m).split(""))
+    b.sort()
+    b.addAll(a.slice(m + 1 .. a.length - 1).split(""))
+    return b.joinToString("")
+}
+
+fun main() {
+
+    if (reverseword("challenge", 'e') == "acehllnge") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (reverseword("programming", 'a') == "agoprrmming") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (reverseword("champion", 'b') == "champion") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-278/roger-bell-west/lua/ch-1.lua b/challenge-278/roger-bell-west/lua/ch-1.lua
new file mode 100755
index 0000000000..2cba1c8d35
--- /dev/null
+++ b/challenge-278/roger-bell-west/lua/ch-1.lua
@@ -0,0 +1,61 @@
+#! /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 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 sortstring(a)
+   local words =splits(a, " ")
+   local out = {}
+   for _a, _b in ipairs(words) do
+      table.insert(out, "")
+   end
+   for _, w in ipairs(words) do
+      local _a, _b, aa, ab = string.find(w, "^(.-)(%d+)$")
+      out[0 + ab] = aa
+   end
+   return joins(out, " ")
+end
+
+if sortstring("and2 Raku3 cousins5 Perl1 are4") == "Perl and Raku are cousins" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if sortstring("guest6 Python1 most4 the3 popular5 is2 language7") == "Python is the most popular guest language" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if sortstring("Challenge3 The1 Weekly2") == "The Weekly Challenge" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-278/roger-bell-west/lua/ch-2.lua b/challenge-278/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..23f45fdeae
--- /dev/null
+++ b/challenge-278/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,55 @@
+#! /usr/bin/lua
+
+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 reverseword(a, c)
+   local s, e = string.find(a, c, 1, true)
+   if s == nil then
+      return a
+   end
+   local b = split(string.sub(a, 1, s))
+   table.sort(b)
+   for _, ch in ipairs(split(string.sub(a, s+1))) do
+      table.insert(b, ch)
+   end
+   return join(b)
+end
+
+if reverseword("challenge", "e") == "acehllnge" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if reverseword("programming", "a") == "agoprrmming" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if reverseword("champion", "b") == "champion" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-278/roger-bell-west/perl/ch-1.pl b/challenge-278/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..3194a0f6b7
--- /dev/null
+++ b/challenge-278/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,21 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is(sortstring('and2 Raku3 cousins5 Perl1 are4'), 'Perl and Raku are cousins', 'example 1');
+is(sortstring('guest6 Python1 most4 the3 popular5 is2 language7'), 'Python is the most popular guest language', 'example 2');
+is(sortstring('Challenge3 The1 Weekly2'), 'The Weekly Challenge', 'example 3');
+
+sub sortstring($a) {
+  my @words = split ' ', $a;
+  my @out = ("") x scalar @words;
+  foreach my $w (@words) {
+    $w =~ /^(.*?)([0-9]+)$/;
+    @out[$2 - 1] = $1;
+  }
+  return join(' ', @out);
+}
diff --git a/challenge-278/roger-bell-west/perl/ch-2.pl b/challenge-278/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..fd1b08e384
--- /dev/null
+++ b/challenge-278/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,22 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is(reverseword('challenge', 'e'), 'acehllnge', 'example 1');
+is(reverseword('programming', 'a'), 'agoprrmming', 'example 2');
+is(reverseword('champion', 'b'), 'champion', 'example 3');
+
+sub reverseword($a, $c) {
+  my $m = index($a, $c);
+  if ($m < 0) {
+    return $a;
+  }
+  my @aa = split('', substr($a, 0, $m+1));
+  @aa = sort @aa;
+  push @aa, split('', substr($a, $m+1));
+  return join('', @aa);
+}
diff --git a/challenge-278/roger-bell-west/postscript/ch-1.ps b/challenge-278/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..bb96d80d6e
--- /dev/null
+++ b/challenge-278/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,155 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/Firedrake/postscript-libraries/
+/c.isdigit {
+    dup 48 ge exch 57 le and
+} bind def
+
+/strconcat % (a) (b) -> (ab)  
+{
+    [
+        3 -1 roll
+        s2a aload length
+        2 add -1 roll
+        s2a aload pop
+    ] a2s
+} bind def
+
+/reverse {
+    1 dict begin
+    dup length /l exch def
+    [ exch
+      aload pop
+      2 1 l {
+          -1 roll
+      } 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
+
+
+/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
+
+/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
+
+
+/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
+
+/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
+
+/test.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+
+% end included library code
+
+/sortstring {
+    0 dict begin
+    ( ) strsplit /words exch def
+    /out words length array def
+    words {
+        s2a /ws exch def
+        /m -1 def
+        /n -1 def
+        ws reverse {
+            /c exch def
+            /n n 1 add def
+            c c.isdigit not {
+                /m ws length 1 sub n sub def
+                exit
+            } if
+        } forall
+        ws m 1 add ws length m sub 1 sub getinterval a2s cvi 1 sub /ix exch def
+        out ix ws 0 m 1 add getinterval a2s put
+    } forall
+    out ( ) strjoin
+    end
+} bind def
+
+(sortstring) test.start
+(and2 Raku3 cousins5 Perl1 are4) sortstring (Perl and Raku are cousins) eq test
+(guest6 Python1 most4 the3 popular5 is2 language7) sortstring (Python is the most popular guest language) eq test
+(Challenge3 The1 Weekly2) sortstring (The Weekly Challenge) eq test
+test.end
diff --git a/challenge-278/roger-bell-west/postscript/ch-2.ps b/challenge-278/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..3cfb87ab46
--- /dev/null
+++ b/challenge-278/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,162 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/Firedrake/postscript-libraries/
+/quicksort.swap {
+    2 dict begin
+    /bi exch def
+    /ai exch def
+    arr ai get
+    arr bi get
+    arr exch ai exch put
+    arr exch bi exch put
+    end
+} 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
+
+/quicksort {
+    { quicksort.cmp } quicksort.with_comparator
+} bind def
+
+/test.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+/quicksort.with_comparator { % [ a c b ] { comparator } -> [ a b c ]
+    2 dict begin
+    /cmp exch def
+    /arr exch def
+    arr length 0 gt {
+        0 arr length 1 sub quicksort.main
+    } if
+    arr
+    end
+} bind def
+
+/quicksort.partition {
+    3 dict begin
+    /pivot arr hi lo add 2 idiv get def
+    /i lo 1 sub def
+    /j hi 1 add def
+    {
+        {
+            /i i 1 add def
+            arr i get pivot cmp 0 ge {
+                exit
+            } if
+        } loop
+        {
+            /j j 1 sub def
+            arr j get pivot cmp 0 le {
+                exit
+            } if
+        } loop
+        i j ge {
+            j
+            exit
+        } if
+        i j quicksort.swap
+    } loop
+    end
+} bind def
+
+/s2a {
+    [ exch { } forall ]
+} bind def
+
+/quicksort.main { % lo hi -> (null)
+    3 dict begin
+    /hi exch def
+    /lo exch def
+    /xit false def
+    lo 0 lt {
+        /xit true def
+    } if
+    hi 0 lt {
+        /xit true def
+    } if
+    lo hi ge {
+        /xit true def
+    } if
+    xit not {
+        /p quicksort.partition def
+        lo p quicksort.main
+        p 1 add hi quicksort.main
+    } if
+    end
+} bind def
+
+/quicksort.cmp {
+    2 copy
+    lt {
+        pop pop -1
+    } {
+        gt {
+            1
+        } {
+            0
+        } ifelse
+    } ifelse
+} 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
+
+/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
+
+
+% end included library code
+
+/reverseword {
+    0 dict begin
+    /c exch def
+    /a exch def
+    /s a s2a def
+    a c search {
+        length /m exch def
+        pop
+        pop
+        s 0 m 1 add getinterval quicksort aload pop
+        s m 1 add a length m sub 1 sub getinterval aload pop
+        a length array astore a2s
+    } if
+    end
+} bind def
+
+(reverseword) test.start
+(challenge) (e) reverseword (acehllnge) eq test
+(programming) (a) reverseword (agoprrmming) eq test
+(champion) (b) reverseword (champion) eq test
+test.end
diff --git a/challenge-278/roger-bell-west/python/ch-1.py b/challenge-278/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..fbed9dc486
--- /dev/null
+++ b/challenge-278/roger-bell-west/python/ch-1.py
@@ -0,0 +1,28 @@
+#! /usr/bin/python3
+
+import re
+
+def sortstring(a):
+  words = a.split(" ")
+  out = words.copy()
+  pr = re.compile(r'^(.*?)([0-9]+)$')
+  for w in words:
+    c = pr.search(w)
+    index = int(c.group(2)) - 1
+    out[index] = c.group(1)
+  return " ".join(out)
+
+import unittest
+
+class TestSortstring(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(sortstring("and2 Raku3 cousins5 Perl1 are4"), "Perl and Raku are cousins", 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(sortstring("guest6 Python1 most4 the3 popular5 is2 language7"), "Python is the most popular guest language", 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(sortstring("Challenge3 The1 Weekly2"), "The Weekly Challenge", 'example 3')
+
+unittest.main()
diff --git a/challenge-278/roger-bell-west/python/ch-2.py b/challenge-278/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..aa6af5663a
--- /dev/null
+++ b/challenge-278/roger-bell-west/python/ch-2.py
@@ -0,0 +1,25 @@
+#! /usr/bin/python3
+
+def reverseword(a, c):
+  s = a.find(c)
+  if s == -1:
+    return a
+  b = list(a[0:s+1])
+  b.sort()
+  b.extend(list(a[s+1:]))
+  return "".join(b)
+
+import unittest
+
+class TestReverseword(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(reverseword("challenge", "e"), "acehllnge", 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(reverseword("programming", "a"), "agoprrmming", 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(reverseword("champion", "b"), "champion", 'example 3')
+
+unittest.main()
diff --git a/challenge-278/roger-bell-west/raku/ch-1.p6 b/challenge-278/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..e081b800f6
--- /dev/null
+++ b/challenge-278/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,19 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is(sortstring('and2 Raku3 cousins5 Perl1 are4'), 'Perl and Raku are cousins', 'example 1');
+is(sortstring('guest6 Python1 most4 the3 popular5 is2 language7'), 'Python is the most popular guest language', 'example 2');
+is(sortstring('Challenge3 The1 Weekly2'), 'The Weekly Challenge', 'example 3');
+
+sub sortstring($a) {
+    my @words = $a.split(' ');
+    my @out = ["" xx @words.elems];
+    for @words -> $w {
+        $w ~~ /^(.*?)(<[0..9]>+)$/;
+        @out[$1 - 1] = $0 ~ '';
+    }
+    return @out.join(' ');
+}
diff --git a/challenge-278/roger-bell-west/raku/ch-2.p6 b/challenge-278/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..36e74203fc
--- /dev/null
+++ b/challenge-278/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,20 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is(reverseword('challenge', 'e'), 'acehllnge', 'example 1');
+is(reverseword('programming', 'a'), 'agoprrmming', 'example 2');
+is(reverseword('champion', 'b'), 'champion', 'example 3');
+
+sub reverseword($a, $c) {
+    with $a.index($c) -> $m {
+        my @aa = $a.substr(0, $m+1).comb;
+        @aa = sort @aa;
+        @aa.push($a.substr($m+1).comb.Slip);
+        return @aa.join('');
+    } else {
+        return $a;
+    }
+}
diff --git a/challenge-278/roger-bell-west/ruby/ch-1.rb b/challenge-278/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..e87b3d74fb
--- /dev/null
+++ b/challenge-278/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,31 @@
+#! /usr/bin/ruby
+
+def sortstring(a)
+  words = a.split(" ")
+  out = words.clone
+  words.each do |w|
+    if md = /^(.*?)([0-9]+)$/.match(w)
+      ix = md[2].to_i - 1
+      out[ix] = md[1]
+    end
+  end
+  out.join(" ")
+end
+
+require 'test/unit'
+
+class TestSortstring < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal('Perl and Raku are cousins', sortstring('and2 Raku3 cousins5 Perl1 are4'))
+  end
+
+  def test_ex2
+    assert_equal('Python is the most popular guest language', sortstring('guest6 Python1 most4 the3 popular5 is2 language7'))
+  end
+
+  def test_ex3
+    assert_equal('The Weekly Challenge', sortstring('Challenge3 The1 Weekly2'))
+  end
+
+end
diff --git a/challenge-278/roger-bell-west/ruby/ch-2.rb b/challenge-278/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..e63f122b49
--- /dev/null
+++ b/challenge-278/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,30 @@
+#! /usr/bin/ruby
+
+def reverseword(a, c)
+  mm = a.index(c)
+  if mm.nil?
+    return a
+  end
+  b = a[0, mm + 1].split("")
+  b.sort!()
+  b.concat(a[mm + 1, a.size - mm].split("") )
+  b.join("")
+end
+
+require 'test/unit'
+
+class TestReverseword < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal('acehllnge', reverseword('challenge', 'e'))
+  end
+
+  def test_ex2
+    assert_equal('agoprrmming', reverseword('programming', 'a'))
+  end
+
+  def test_ex3
+    assert_equal('champion', reverseword('champion', 'b'))
+  end
+
+end
diff --git a/challenge-278/roger-bell-west/rust/ch-1.rs b/challenge-278/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..3cca2ed314
--- /dev/null
+++ b/challenge-278/roger-bell-west/rust/ch-1.rs
@@ -0,0 +1,34 @@
+use regex::Regex;
+
+#[test]
+fn test_ex1() {
+    assert_eq!(
+        sortstring("and2 Raku3 cousins5 Perl1 are4"),
+        "Perl and Raku are cousins"
+    );
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(
+        sortstring("guest6 Python1 most4 the3 popular5 is2 language7"),
+        "Python is the most popular guest language"
+    );
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(sortstring("Challenge3 The1 Weekly2"), "The Weekly Challenge");
+}
+
+fn sortstring(a: &str) -> String {
+    let words = a.split(' ').collect::<Vec<&str>>();
+    let mut out = vec![String::new(); words.len()];
+    let re = Regex::new(r"^(.*?)([0-9]+)$").unwrap();
+    for w in words {
+        let c = re.captures(&w).unwrap();
+        let index = c.get(2).unwrap().as_str().parse::<usize>().unwrap() - 1;
+        out[index] = c.get(1).unwrap().as_str().to_string();
+    }
+    out.join(" ")
+}
diff --git a/challenge-278/roger-bell-west/rust/ch-2.rs b/challenge-278/roger-bell-west/rust/ch-2.rs
new file mode 100755
index 0000000000..2d342cec8e
--- /dev/null
+++ b/challenge-278/roger-bell-west/rust/ch-2.rs
@@ -0,0 +1,32 @@
+#! /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!(reverseword("challenge", 'e'), "acehllnge");
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(reverseword("programming", 'a'), "agoprrmming");
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(reverseword("champion", 'b'), "champion");
+}
+
+fn reverseword(a: &str, c: char) -> String {
+    match a.find(c) {
+        Some(s) => {
+            let b = a.bytes().collect::<Vec<_>>();
+            let mut c: Vec<u8> = b[0..=s].to_vec();
+            c.sort();
+            c.append(&mut b[s + 1..b.len()].to_vec());
+            return std::str::from_utf8(&c).unwrap().to_string();
+        }
+        _ => {