Merge branch 'master' of https://github.com/manwar/perlweeklychallenge-club

19 files changed, 1137 insertions, 0 deletions

diff --git a/challenge-202/roger-bell-west/javascript/ch-1.js b/challenge-202/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..65d6dc79a2
--- /dev/null
+++ b/challenge-202/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,43 @@
+#! /usr/bin/node
+
+"use strict"
+
+function consecutiveodds(a) {
+    let i = 0;
+    for (let v of a) {
+        if (v % 2 == 1) {
+            i++;
+            if (i >= 3) {
+                return true;
+            }
+        } else {
+            i = 0;
+        }
+    }
+    return false;
+}
+
+if (consecutiveodds([1, 5, 3, 6])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (!consecutiveodds([2, 6, 3, 5])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (!consecutiveodds([1, 2, 3, 4])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (consecutiveodds([2, 3, 5, 7])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-202/roger-bell-west/javascript/ch-2.js b/challenge-202/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..737ffcebd3
--- /dev/null
+++ b/challenge-202/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 widestvalley(a) {
+    let av = [];
+    let ac = [];
+    let l = -1;
+    for (let v of a) {
+        if (v == l) {
+            ac[ac.length - 1]++;
+        } else {
+            av.push(v);
+            ac.push(1);
+            l = v;
+        }
+    }
+    let s = [];
+    let e = []
+    let c = 0;
+    for (let i = 0; i < av.length; i++) {
+        if (i == 0 || i == av.length - 1 || (av[i - 1] < av[i] && av[i] > av[i + 1])) {
+            s.push(c);
+            e.push(c + ac[i] - 1);
+        }
+        c += ac[i];
+    }
+    let out = [];
+    for (let i = 0; i < s.length - 1; i++) {
+        if (e[i + 1] - s[i] + 1 > out.length) {
+            out = a.slice(s[i], e[i + 1] + 1);
+        }
+    }
+    return out;
+}
+
+if (deepEqual(widestvalley([1, 5, 5, 2, 8]), [5, 5, 2, 8])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(widestvalley([2, 6, 8, 5]), [2, 6, 8])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(widestvalley([9, 8, 13, 13, 2, 2, 15, 17]), [13, 13, 2, 2, 15, 17])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(widestvalley([2, 1, 2, 1, 3]), [2, 1, 2])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(widestvalley([1, 3, 3, 2, 1, 2, 3, 3, 2]), [3, 3, 2, 1, 2, 3, 3])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-202/roger-bell-west/kotlin/ch-1.kt b/challenge-202/roger-bell-west/kotlin/ch-1.kt
new file mode 100644
index 0000000000..84eaf2418f
--- /dev/null
+++ b/challenge-202/roger-bell-west/kotlin/ch-1.kt
@@ -0,0 +1,43 @@
+fun consecutiveodds(a: List<Int>): Boolean {
+    var i = 0
+    for (v in a) {
+        if (v % 2 == 1) {
+            i += 1
+            if (i >= 3) {
+                return true
+            }
+        } else {
+            i = 0
+        }
+    }
+    return false
+}
+
+fun main() {
+
+    if (consecutiveodds(listOf(1, 5, 3, 6))) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (!consecutiveodds(listOf(2, 6, 3, 5))) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (!consecutiveodds(listOf(1, 2, 3, 4))) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (consecutiveodds(listOf(2, 3, 5, 7))) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-202/roger-bell-west/kotlin/ch-2.kt b/challenge-202/roger-bell-west/kotlin/ch-2.kt
new file mode 100644
index 0000000000..edb5ba31cc
--- /dev/null
+++ b/challenge-202/roger-bell-west/kotlin/ch-2.kt
@@ -0,0 +1,66 @@
+fun widestvalley(a: List<Int>): List<Int> {
+    var av = ArrayList<Int>()
+    var ac = ArrayList<Int>()
+    var l = -1
+    for (v in a) {
+        if (v == l) {
+            ac[ac.size - 1] += 1
+        } else {
+            av.add(v)
+            ac.add(1)
+            l = v
+        }
+    }
+    var s = ArrayList<Int>()
+    var e = ArrayList<Int>()
+    var c = 0
+    for (i in 0 .. av.size-1) {
+        if (i == 0 || i == av.size - 1 || (av[i - 1] < av[i] && av[i] > av[i + 1])) {
+            s.add(c)
+            e.add(c + ac[i] - 1)
+        }
+        c += ac[i]
+    }
+    var out = emptyList<Int>()
+    for (i in 0 .. s.size - 2) {
+        if (e[i + 1] - s[i] + 1 > out.size) {
+            out = a.slice(s[i] .. e[i + 1]).toList()
+        }
+    }
+    return out
+}
+
+fun main() {
+
+    if (widestvalley(listOf(1, 5, 5, 2, 8)) == listOf(5, 5, 2, 8)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (widestvalley(listOf(2, 6, 8, 5)) == listOf(2, 6, 8)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (widestvalley(listOf(9, 8, 13, 13, 2, 2, 15, 17)) == listOf(13, 13, 2, 2, 15, 17)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (widestvalley(listOf(2, 1, 2, 1, 3)) == listOf(2, 1, 2)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (widestvalley(listOf(1, 3, 3, 2, 1, 2, 3, 3, 2)) == listOf(3, 3, 2, 1, 2, 3, 3)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-202/roger-bell-west/lua/ch-1.lua b/challenge-202/roger-bell-west/lua/ch-1.lua
new file mode 100755
index 0000000000..a90926276f
--- /dev/null
+++ b/challenge-202/roger-bell-west/lua/ch-1.lua
@@ -0,0 +1,45 @@
+#! /usr/bin/lua
+
+function consecutiveodds(a)
+   local i = 0
+   for _dummy,v in ipairs(a) do
+      if v % 2 == 1 then
+         i = i + 1
+         if i >= 3 then
+            return true
+         end
+      else
+         i = 0
+      end
+   end
+   return 0
+end
+
+if consecutiveodds({1, 5, 3, 6}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if ~consecutiveodds({2, 6, 3, 5}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if ~consecutiveodds({1, 2, 3, 4}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if consecutiveodds({2, 3, 5, 7}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-202/roger-bell-west/lua/ch-2.lua b/challenge-202/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..830adac8d2
--- /dev/null
+++ b/challenge-202/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,103 @@
+#! /usr/bin/lua
+
+-- by Michael Anderson at
+-- https://stackoverflow.com/questions/8722620/comparing-two-index-tables-by-index-value-in-lua
+function recursive_compare(t1,t2)
+   if t1==t2 then return true end
+   if (type(t1)~="table") then return false end
+   local mt1 = getmetatable(t1)
+   local mt2 = getmetatable(t2)
+   if( not recursive_compare(mt1,mt2) ) then return false end
+   for k1,v1 in pairs(t1) do
+      local v2 = t2[k1]
+      if( not recursive_compare(v1,v2) ) then return false end
+   end
+   for k2,v2 in pairs(t2) do
+      local v1 = t1[k2]
+      if( not recursive_compare(v1,v2) ) then return false end
+   end
+   return true
+end
+
+function widestvalley(a)
+   local av = {}
+   local ac = {}
+   local l = -1
+   for i,v in ipairs(a) do
+      if v == l then
+         ac[#ac] = ac[#ac] + 1
+      else
+         table.insert(av, v)
+         table.insert(ac, 1)
+         l = v
+      end
+   end
+   local s = {}
+   local e = {}
+   local c = 1
+   for i,v in ipairs(av) do
+      local peak = false
+      if i == 1 or i == #av then
+         peak = true
+      end
+      if not peak then
+         if (av[i - 1] < v and v > av[i + 1]) then
+            peak = true
+         end
+      end
+      if peak then
+         table.insert(s, c)
+         table.insert(e, c + ac[i] - 1)
+      end
+      c = c + ac[i]
+   end
+   local out = {}
+   for i,v in ipairs(s) do
+      if i == #s then
+         break
+      end
+      if e[i + 1] - s[i] + 1 > #out then
+         out = {}
+         for j = s[i], e[i+1] do
+            table.insert(out, a[j])
+         end
+      end
+   end
+   return out
+end
+
+if recursive_compare(widestvalley({1, 5, 5, 2, 8}), {5, 5, 2, 8}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(widestvalley({2, 6, 8, 5}), {2, 6, 8}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(widestvalley({9, 8, 13, 13, 2, 2, 15, 17}), {13, 13, 2, 2, 15, 17}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(widestvalley({2, 1, 2, 1, 3}), {2, 1, 2}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(widestvalley({1, 3, 3, 2, 1, 2, 3, 3, 2}), {3, 3, 2, 1, 2, 3, 3}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-202/roger-bell-west/perl/ch-1.pl b/challenge-202/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..6add302b31
--- /dev/null
+++ b/challenge-202/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,27 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 4;
+
+is(consecutiveodds([1, 5, 3, 6]), 1, 'example 1');
+is(consecutiveodds([2, 6, 3, 5]), 0, 'example 2');
+is(consecutiveodds([1, 2, 3, 4]), 0, 'example 3');
+is(consecutiveodds([2, 3, 5, 7]), 1, 'example 4');
+
+sub consecutiveodds($a) {
+  my $i = 0;
+  foreach my $v (@{$a}) {
+    if ($v % 2 == 1) {
+      $i++;
+      if ($i >= 3) {
+        return 1;
+      }
+    } else {
+      $i = 0;
+    }
+  }
+  return 0;
+}
diff --git a/challenge-202/roger-bell-west/perl/ch-2.pl b/challenge-202/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..b81795010b
--- /dev/null
+++ b/challenge-202/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,45 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 5;
+
+is_deeply(widestvalley([1, 5, 5, 2, 8]), [5, 5, 2, 8], 'example 1');
+is_deeply(widestvalley([2, 6, 8, 5]), [2, 6, 8], 'example 2');
+is_deeply(widestvalley([9, 8, 13, 13, 2, 2, 15, 17]), [13, 13, 2, 2, 15, 17], 'example 3');
+is_deeply(widestvalley([2, 1, 2, 1, 3]), [2, 1, 2], 'example 4');
+is_deeply(widestvalley([1, 3, 3, 2, 1, 2, 3, 3, 2]), [3, 3, 2, 1, 2, 3, 3], 'example 5');
+
+sub widestvalley($a) {
+    my @av;
+    my @ac;
+    my $l = -1;
+    foreach my $v (@{$a}) {
+        if ($v == $l) {
+            $ac[-1]++;
+        } else {
+            push @av, $v;
+            push @ac, 1;
+            $l = $v;
+        }
+    }
+    my @s;
+    my @e;
+    my $c = 0;
+    foreach my $i (0..$#av) {
+        if ($i == 0 || $i == $#av || ($av[$i - 1] < $av[$i] && $av[$i] > $av[$i + 1])) {
+            push @s, $c;
+            push @e, $c + $ac[$i] - 1;
+        }
+        $c += $ac[$i];
+    }
+    my @out;
+    foreach my $i (0..$#s - 1) {
+        if ($e[$i + 1] - $s[$i] + 1 > scalar @out) {
+            @out = @{$a}[$s[$i]..$e[$i + 1]];
+        }
+    }
+    return \@out;
+}
diff --git a/challenge-202/roger-bell-west/postscript/ch-1.ps b/challenge-202/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..ece56b49ac
--- /dev/null
+++ b/challenge-202/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,63 @@
+%!PS
+
+% begin included library code
+% see https://github.com/Firedrake/postscript-libraries/
+/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
+
+/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
+
+/consecutiveodds {
+    2 dict begin
+    /i 0 def
+    /r false def
+    {
+        2 mod 1 eq {
+            /i i 1 add def
+            i 3 ge {
+                /r true def
+                exit
+            } if
+        } {
+            /i 0 def
+        } ifelse
+    } forall
+    r
+    end
+} bind def
+
+(consecutiveodds) test.start
+[1 5 3 6] consecutiveodds test
+[2 6 3 5] consecutiveodds not test
+[1 2 3 4] consecutiveodds not test
+[2 3 5 7] consecutiveodds test
+test.end
diff --git a/challenge-202/roger-bell-west/postscript/ch-2.ps b/challenge-202/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..25ac7f7689
--- /dev/null
+++ b/challenge-202/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,158 @@
+%!PS
+
+% begin included library code
+% see https://github.com/Firedrake/postscript-libraries/
+/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
+
+/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
+
+/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
+
+/apush.right { % [a b] c -> [a b c]
+    exch
+    [ exch aload length 2 add -1 roll ]
+} bind def
+
+
+% end included library code
+
+/widestvalley {
+    11 dict begin
+    /a exch def
+    /av 0 array def
+    /ac 0 array def
+    /l -1 def
+    a {
+        /v exch def
+        v l eq {
+            ac dup dup length 1 sub dup 3 1 roll
+            get 1 add put
+        } {
+            /av av v apush.right def
+            /ac ac 1 apush.right def
+            /l v def
+        } ifelse
+    } forall
+    /s 0 array def
+    /e 0 array def
+    /c 0 def
+    0 1 av length 1 sub {
+        /i exch def
+        /peak false def
+        i 0 eq i av length 1 sub eq or {
+            /peak true def
+        } if
+        peak not {
+            av i 1 sub get av i get lt
+            av i get av i 1 add get gt and {
+                /peak true def
+            } if
+        } if
+        peak {
+            /s s c apush.right def
+            /e e c ac i get add 1 sub apush.right def
+        } if
+        /c c ac i get add def
+    } for
+    /out 0 array def
+    0 1 s length 2 sub {
+        /i exch def
+        /v s i get def
+        e i 1 add get s i get sub 1 add out length gt {
+            /out a s i get dup e i 1 add get exch sub 1 add getinterval def
+        } if
+    } for
+    out
+    end
+} bind def
+
+(widestvalley) test.start
+[1 5 5 2 8] widestvalley [5 5 2 8] deepeq test
+[2 6 8 5] widestvalley [2 6 8] deepeq test
+[9 8 13 13 2 2 15 17] widestvalley [13 13 2 2 15 17] deepeq test
+[2 1 2 1 3] widestvalley [2 1 2] deepeq test
+[1 3 3 2 1 2 3 3 2] widestvalley [3 3 2 1 2 3 3] deepeq test
+test.end
diff --git a/challenge-202/roger-bell-west/python/ch-1.py b/challenge-202/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..1700e2824b
--- /dev/null
+++ b/challenge-202/roger-bell-west/python/ch-1.py
@@ -0,0 +1,30 @@
+#! /usr/bin/python3
+
+import unittest
+
+def consecutiveodds(a):
+  i = 0
+  for v in a:
+    if v % 2 == 1:
+      i += 1
+      if i >= 3:
+        return True
+    else:
+      i = 0
+  return False
+
+class TestConsecutiveodds(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(consecutiveodds([1, 5, 3, 6]), True, 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(consecutiveodds([2, 6, 3, 5]), False, 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(consecutiveodds([1, 2, 3, 4]), False, 'example 3')
+
+  def test_ex4(self):
+    self.assertEqual(consecutiveodds([2, 3, 5, 7]), True, 'example 4')
+
+unittest.main()
diff --git a/challenge-202/roger-bell-west/python/ch-2.py b/challenge-202/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..447a12d6f9
--- /dev/null
+++ b/challenge-202/roger-bell-west/python/ch-2.py
@@ -0,0 +1,48 @@
+#! /usr/bin/python3
+
+import unittest
+
+def widestvalley(a):
+  av = []
+  ac = []
+  l = -1
+  for v in a:
+    if v == l:
+      ac[-1] += 1
+    else:
+      av.append(v)
+      ac.append(1)
+      l = v
+  s = []
+  e = []
+  c = 0
+  for i in range(len(av)):
+    if i ==0 or i == len(av) - 1 or (av[i - 1] < av[i] and av[i] > av[i + 1]):
+      s.append(c)
+      e.append(c + ac[i] - 1)
+    c += ac[i]
+  out = []
+  for i in range(len(s) - 1):
+    if e[i+1] - s[i] + 1 > len(out):
+      out = a[s[i] : e[i+1] + 1];
+  return out
+
+
+class TestWidestvalley(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(widestvalley([1, 5, 5, 2, 8]), [5, 5, 2, 8], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(widestvalley([2, 6, 8, 5]), [2, 6, 8], 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(widestvalley([9, 8, 13, 13, 2, 2, 15, 17]), [13, 13, 2, 2, 15, 17], 'example 3')
+
+  def test_ex4(self):
+    self.assertEqual(widestvalley([2, 1, 2, 1, 3]), [2, 1, 2], 'example 4')
+
+  def test_ex5(self):
+    self.assertEqual(widestvalley([1, 3, 3, 2, 1, 2, 3, 3, 2]), [3, 3, 2, 1, 2, 3, 3], 'example 5')
+
+unittest.main()
diff --git a/challenge-202/roger-bell-west/raku/ch-1.p6 b/challenge-202/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..a64adbff5b
--- /dev/null
+++ b/challenge-202/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,25 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 4;
+
+is(consecutiveodds([1, 5, 3, 6]), True, 'example 1');
+is(consecutiveodds([2, 6, 3, 5]), False, 'example 2');
+is(consecutiveodds([1, 2, 3, 4]), False, 'example 3');
+is(consecutiveodds([2, 3, 5, 7]), True, 'example 4');
+
+sub consecutiveodds(@a) {
+    my $i = 0;
+    for (@a) -> $v {
+        if ($v % 2 == 1) {
+            $i++;
+            if ($i >= 3) {
+                return True;
+            }
+        } else {
+            $i = 0;
+        }
+    }
+    return False;
+}
diff --git a/challenge-202/roger-bell-west/raku/ch-2.p6 b/challenge-202/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..7b7869c590
--- /dev/null
+++ b/challenge-202/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,44 @@
+#! /usr/bin/raku
+
+use Test;
+
+#plan 5;
+plan 5;
+
+is-deeply(widestvalley([1, 5, 5, 2, 8]), [5, 5, 2, 8], 'example 1');
+is-deeply(widestvalley([2, 6, 8, 5]), [2, 6, 8], 'example 2');
+is-deeply(widestvalley([9, 8, 13, 13, 2, 2, 15, 17]), [13, 13, 2, 2, 15, 17], 'example 3');
+is-deeply(widestvalley([2, 1, 2, 1, 3]), [2, 1, 2], 'example 4');
+is-deeply(widestvalley([1, 3, 3, 2, 1, 2, 3, 3, 2]), [3, 3, 2, 1, 2, 3, 3], 'example 5');
+
+sub widestvalley(@a) {
+    my @av;
+    my @ac;
+    my $l = -1;
+    for (@a) -> $v {
+        if ($v == $l) {
+            @ac[*-1]++;
+        } else {
+            @av.push($v);
+            @ac.push(1);
+            $l = $v;
+        }
+    }
+    my @s;
+    my @e;
+    my $c = 0;
+    for (0..@av.end) -> $i {
+        if ($i == 0 || $i == @av.end || (@av[$i - 1] < @av[$i] && @av[$i] > @av[$i + 1])) {
+            @s.push($c);
+            @e.push($c + @ac[$i] - 1);
+        }
+        $c += @ac[$i];
+    }
+    my @out;
+    for (0..@s.end - 1) -> $i {
+        if (@e[$i + 1] - @s[$i] + 1 > @out.elems) {
+            @out = @a[@s[$i]..@e[$i + 1]];
+        }
+    }
+    return @out;
+}
diff --git a/challenge-202/roger-bell-west/ruby/ch-1.rb b/challenge-202/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..0b4d240caa
--- /dev/null
+++ b/challenge-202/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,38 @@
+#! /usr/bin/ruby
+
+require 'test/unit'
+
+def consecutiveodds(a)
+  i = 0
+  a.each do |v|
+    if v % 2 == 1 then
+      i += 1
+      if i >= 3 then
+        return true
+      end
+    else
+      i = 0
+    end
+  end
+  return false
+end
+
+class TestConsecutiveodds < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal(true, consecutiveodds([1, 5, 3, 6]))
+  end
+
+  def test_ex2
+    assert_equal(false, consecutiveodds([2, 6, 3, 5]))
+  end
+
+  def test_ex3
+    assert_equal(false, consecutiveodds([1, 2, 3, 4]))
+  end
+
+  def test_ex4
+    assert_equal(true, consecutiveodds([2, 3, 5, 7]))
+  end
+
+end
diff --git a/challenge-202/roger-bell-west/ruby/ch-2.rb b/challenge-202/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..5ca02192e9
--- /dev/null
+++ b/challenge-202/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,61 @@
+#! /usr/bin/ruby
+
+require 'test/unit'
+
+def widestvalley(a)
+  av = []
+  ac = []
+  l = -1
+  a.each do |v|
+    if v == l then
+      ac[-1] += 1
+    else
+      av.push(v)
+      ac.push(1)
+      l = v
+    end
+  end
+  s = []
+  e = []
+  c = 0
+  0.upto(av.length - 1) do |i|
+    if i ==0 ||
+       i == av.length - 1 ||
+       (av[i - 1] < av[i] && av[i] > av[i + 1]) then
+      s.push(c)
+      e.push(c + ac[i] - 1)
+    end
+    c += ac[i]
+  end
+  out = []
+  0.upto(s.length - 2) do |i|
+    if e[i+1] - s[i] + 1 > out.length then
+      out = a[s[i] .. e[i+1]];
+    end
+  end
+  return out
+end
+
+class TestWidestvalley < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal([5, 5, 2, 8], widestvalley([1, 5, 5, 2, 8]))
+  end
+
+  def test_ex2
+    assert_equal([2, 6, 8], widestvalley([2, 6, 8, 5]))
+  end
+
+  def test_ex3
+    assert_equal([13, 13, 2, 2, 15, 17], widestvalley([9, 8, 13, 13, 2, 2, 15, 17]))
+  end
+
+  def test_ex4
+    assert_equal([2, 1, 2], widestvalley([2, 1, 2, 1, 3]))
+  end
+
+  def test_ex5
+    assert_equal([3, 3, 2, 1, 2, 3, 3], widestvalley([1, 3, 3, 2, 1, 2, 3, 3, 2]))
+  end
+
+end
diff --git a/challenge-202/roger-bell-west/rust/ch-1.rs b/challenge-202/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..9e7c4433e0
--- /dev/null
+++ b/