Solutions for challenge #196

18 files changed, 969 insertions, 0 deletions

diff --git a/challenge-196/roger-bell-west/javascript/ch-1.js b/challenge-196/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..1e849d686e
--- /dev/null
+++ b/challenge-196/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,81 @@
+#! /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 pattern132(l) {
+    let o = [];
+    for (let a = 0; a < l.length-2; a++) {
+        for (let b = a+1; b < l.length-1; b++) {
+            if (l[a] < l[b]) {
+                for (let c = b+1; c < l.length; c++) {
+                    if (l[b] > l[c] && l[a] < l[c]) {
+                        o = [l[a], l[b], l[c]]
+                        break
+                    }
+                }
+            }
+            if (o.length > 0) {
+                break
+            }
+        }
+        if (o.length > 0) {
+            break
+        }
+    }
+    return o;
+}
+
+if (deepEqual(pattern132([3, 1, 4, 2]), [1, 4, 2])) {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+
+if (deepEqual(pattern132([1, 2, 3, 4]), [])) {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+
+if (deepEqual(pattern132([1, 3, 2, 4, 6, 5]), [1, 3, 2])) {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+
+if (deepEqual(pattern132([1, 3, 4, 2]), [1, 3, 2])) {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-196/roger-bell-west/javascript/ch-2.js b/challenge-196/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..6a6650fa70
--- /dev/null
+++ b/challenge-196/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,70 @@
+#! /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 rangelist(l) {
+    let o = [];
+    let start = l[0];
+    let prev = start;
+    for (let v of l.slice(1)) {
+        if (v != prev + 1) {
+            if (prev > start) {
+                o.push([start, prev]);
+            }
+            start = v;
+        }
+        prev = v;
+    }
+    if (prev > start) {
+        o.push([start, prev]);
+    }
+    return o;
+}
+
+if (deepEqual(rangelist([1, 3, 4, 5, 7]), [[3, 5]])) {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+
+if (deepEqual(rangelist([1, 2, 3, 6, 7, 9]), [[1, 3], [6, 7]])) {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+
+if (deepEqual(rangelist([0, 1, 2, 4, 5, 6, 8, 9]), [[0, 2], [4, 6], [8, 9]])) {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-196/roger-bell-west/kotlin/ch-1.kt b/challenge-196/roger-bell-west/kotlin/ch-1.kt
new file mode 100644
index 0000000000..c50967a018
--- /dev/null
+++ b/challenge-196/roger-bell-west/kotlin/ch-1.kt
@@ -0,0 +1,52 @@
+fun pattern132(l: List<Int>): List<Int> {
+    var o = ArrayList<Int>()
+    for (a in 0..l.size-3) {
+       for (b in a+1..l.size-2) {
+            if (l[a] < l[b]) {
+                for (c in b+1..l.size-1) {
+                    if (l[b] > l[c] && l[a] < l[c]) {
+                        o = arrayListOf(l[a], l[b], l[c])
+                        break
+                    }
+                }
+            }
+            if (o.size > 0) {
+                break
+            }
+        }
+        if (o.size > 0) {
+            break
+        }
+    }
+    return o.toList()
+}
+
+fun main() {
+    if (pattern132(listOf(3, 1, 4, 2)) == listOf(1, 4, 2)) {
+        print("Pass")
+    } else {
+        print("FAIL")
+    }
+    print(" ")
+
+    if (pattern132(listOf(1, 2, 3, 4)) == emptyList<Int>()) {
+        print("Pass")
+    } else {
+        print("FAIL")
+    }
+    print(" ")
+
+    if (pattern132(listOf(1, 3, 2, 4, 6, 5)) == listOf(1, 3, 2)) {
+        print("Pass")
+    } else {
+        print("FAIL")
+    }
+    print(" ")
+
+    if (pattern132(listOf(1, 3, 4, 2)) == listOf(1, 3, 2)) {
+        print("Pass")
+    } else {
+        print("FAIL")
+    }
+    println("")
+}
diff --git a/challenge-196/roger-bell-west/kotlin/ch-2.kt b/challenge-196/roger-bell-west/kotlin/ch-2.kt
new file mode 100644
index 0000000000..88d9015059
--- /dev/null
+++ b/challenge-196/roger-bell-west/kotlin/ch-2.kt
@@ -0,0 +1,41 @@
+fun rangelist(l: List<Int>): List<List<Int>> {
+    var o = ArrayList<List<Int>>()
+    var start = l[0]
+    var prev = start
+    for (v in l.drop(1)) {
+        if (v != prev + 1) {
+            if (prev > start) {
+                o.add(listOf(start, prev))
+            }
+            start = v
+        }
+        prev = v
+    }
+    if (prev > start) {
+        o.add(listOf(start, prev))
+    }
+    return o.toList()
+}
+
+fun main() {
+    if (rangelist(listOf(1, 3, 4, 5, 7)) == listOf(listOf(3, 5))) {
+        print("Pass")
+    } else {
+        print("FAIL")
+    }
+    print(" ")   
+    if (rangelist(listOf(1, 2, 3, 6, 7, 9)) ==
+            listOf(listOf(1, 3), listOf(6, 7))) {
+        print("Pass")
+    } else {
+        print("FAIL")
+    }
+    print(" ")   
+    if (rangelist(listOf(0, 1, 2, 4, 5, 6, 8, 9)) ==
+            listOf(listOf(0, 2), listOf(4, 6), listOf(8, 9))) {
+        print("Pass")
+    } else {
+        print("FAIL")
+    }
+    println("")
+}
diff --git a/challenge-196/roger-bell-west/lua/ch-1.lua b/challenge-196/roger-bell-west/lua/ch-1.lua
new file mode 100755
index 0000000000..df1f8cbced
--- /dev/null
+++ b/challenge-196/roger-bell-west/lua/ch-1.lua
@@ -0,0 +1,65 @@
+#! /usr/bin/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 pattern132(l)
+   local o = {}
+   for a = 1, #l-2 do
+      for b = a+1, #l-1 do
+         if l[a] < l[b] then
+            for c = b+1, #l do
+               if l[b] > l[c] and l[a] < l[c] then
+                  o = {l[a], l[b], l[c]}
+                  break
+               end
+            end
+         end
+         if #o > 0 then
+            break
+         end
+      end
+      if #o > 0 then
+         break
+      end
+   end
+   return o
+end
+
+if recursive_compare(pattern132({3, 1, 4, 2}), {1, 4, 2}) then
+   io.write("Pass")
+else
+   io.write("FAIL")
+end
+io.write(" ")
+if recursive_compare(pattern132({1, 2, 3, 4}), {}) then
+   io.write("Pass")
+else
+   io.write("FAIL")
+end
+io.write(" ")
+if recursive_compare(pattern132({1, 3, 2, 4, 6, 5}), {1, 3, 2}) then
+   io.write("Pass")
+else
+   io.write("FAIL")
+end
+io.write(" ")
+if recursive_compare(pattern132({1, 3, 4, 2}), {1, 3, 2}) then
+   io.write("Pass")
+else
+   io.write("FAIL")
+end
+print("")
diff --git a/challenge-196/roger-bell-west/lua/ch-2.lua b/challenge-196/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..720f832be0
--- /dev/null
+++ b/challenge-196/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,62 @@
+#! /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 rangelist(l)
+   local o = {}
+   local start = l[1]
+   local prev = start
+   for i, v in ipairs(l) do
+      if i > 1 then
+         if v ~= prev + 1 then
+            if prev > start then
+               table.insert(o, {start, prev})
+            end
+            start = v
+         end
+         prev = v
+      end
+   end
+   if prev > start then
+      table.insert(o, {start, prev})
+   end
+   return o
+end
+
+if recursive_compare(rangelist({1, 3, 4, 5, 7}), {{3, 5}}) then
+   io.write("Pass")
+else
+   io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(rangelist({1, 2, 3, 6, 7, 9}), {{1, 3}, {6, 7}}) then
+   io.write("Pass")
+else
+   io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(rangelist({0, 1, 2, 4, 5, 6, 8, 9}), {{0, 2}, {4, 6}, {8, 9}}) then
+   io.write("Pass")
+else
+   io.write("FAIL")
+end
+print("")
diff --git a/challenge-196/roger-bell-west/perl/ch-1.pl b/challenge-196/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..e94392a764
--- /dev/null
+++ b/challenge-196/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,30 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 4;
+
+is_deeply(pattern132([3, 1, 4, 2]), [1, 4, 2], 'example 1');
+is_deeply(pattern132([1, 2, 3, 4]), [], 'example 2');
+is_deeply(pattern132([1, 3, 2, 4, 6, 5]), [1, 3, 2], 'example 3');
+is_deeply(pattern132([1, 3, 4, 2]), [1, 3, 2], 'example 4');
+
+sub pattern132($l) {
+  my $o = [];
+ OUTER:
+  foreach my $a (0..$#{$l}-2) {
+    foreach my $b ($a+1..$#{$l}-1) {
+      if ($l->[$a] < $l->[$b]) {
+        foreach my $c ($b+1..$#{$l}) {
+          if ($l->[$b] > $l->[$c] && $l->[$a] < $l->[$c]) {
+            $o = [$l->[$a], $l->[$b], $l->[$c]];
+            last OUTER;
+          }
+        }
+      }
+    }
+  }
+  return $o;
+}
diff --git a/challenge-196/roger-bell-west/perl/ch-2.pl b/challenge-196/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..c1c43fb17a
--- /dev/null
+++ b/challenge-196/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,31 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is_deeply(rangelist([1, 3, 4, 5, 7]), [[3, 5]], 'example 1');
+is_deeply(rangelist([1, 2, 3, 6, 7, 9]), [[1, 3], [6, 7]], 'example 2');
+is_deeply(rangelist([0, 1, 2, 4, 5, 6, 8, 9]),
+          [[0, 2], [4, 6], [8, 9]], 'example 3');
+
+sub rangelist($l) {
+  my @o;
+  my $start = $l->[0];
+  my $prev = $start;
+  foreach my $v (@{$l}[1..$#{$l}]) {
+    if ($v != $prev + 1) {
+      if ($prev > $start) {
+        push @o, [$start, $prev];
+      }
+      $start = $v;
+    }
+    $prev = $v;
+  }
+  if ($prev > $start) {
+    push @o, [$start, $prev];
+  }
+  return \@o;
+}
diff --git a/challenge-196/roger-bell-west/postscript/ch-1.ps b/challenge-196/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..2d3d58636b
--- /dev/null
+++ b/challenge-196/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,132 @@
+%!PS
+
+% begin included library code
+% see https://github.com/Firedrake/postscript-libraries/
+/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
+
+/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
+
+/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
+
+
+% end included library code
+
+/pattern132 {
+    5 dict begin
+    /l exch def
+    /o 0 array def
+    0 1 l length 3 sub {
+        /a exch def
+        a 1 add 1 l length 2 sub {
+            /b exch def
+            l a get l b get lt {
+                b 1 add 1 l length 1 sub {
+                    /c exch def
+                    l b get l c get gt
+                    l a get l c get lt and {
+                        /o [ l a get l b get l c get ] def
+                        exit
+                    } if
+                } for
+            } if
+            o length 0 gt {
+                exit
+            } if
+        } for
+        o length 0 gt {
+            exit
+        } if
+    } for
+    o
+    end
+} bind def
+
+(pattern132) test.start
+[ 3 1 4 2 ] pattern132 [ 1 4 2 ] deepeq test
+[ 1 2 3 4 ] pattern132 [ ] deepeq test
+[ 1 3 2 4 6 5 ] pattern132 [ 1 3 2 ] deepeq test
+[ 1 3 4 2 ] pattern132 [ 1 3 2 ] deepeq test
+test.end
diff --git a/challenge-196/roger-bell-west/postscript/ch-2.ps b/challenge-196/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..141fbb5737
--- /dev/null
+++ b/challenge-196/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,124 @@
+%!PS
+
+% begin included library code
+% see https://github.com/Firedrake/postscript-libraries/
+/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
+
+/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
+
+/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
+
+
+% end included library code
+
+/rangelist {
+    4 dict begin
+    /l exch def
+    /start l 0 get def
+    /prev start def
+    [
+        l 1 l length 1 sub getinterval {
+            /v exch def
+            v prev 1 add ne {
+                prev start gt {
+                    [ start prev ]
+                } if
+                /start v def
+            } if
+            /prev v def
+        } forall
+        prev start gt {
+            [ start prev ]
+        } if
+    ]
+    end
+} bind def
+
+(rangelist) test.start
+[ 1 3 4 5 7 ] rangelist [ [ 3 5 ] ] deepeq test
+[ 1 2 3 6 7 9 ] rangelist [ [ 1 3 ] [ 6 7 ] ] deepeq test
+[ 0 1 2 4 5 6 8 9 ] rangelist [ [ 0 2 ] [ 4 6 ] [ 8 9 ] ] deepeq test
+test.end
diff --git a/challenge-196/roger-bell-west/python/ch-1.py b/challenge-196/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..8cdc462919
--- /dev/null
+++ b/challenge-196/roger-bell-west/python/ch-1.py
@@ -0,0 +1,34 @@
+#! /usr/bin/python3
+
+import unittest
+
+def pattern132(l):
+  o = []
+  for a in range(0, len(l) - 2):
+    for b in range(a + 1, len(l) - 1):
+      if l[a] < l[b]:
+        for c in range(b + 1, len(l)):
+          if l[b] > l[c] and l[a] < l[c]:
+            o = [l[a], l[b], l[c]]
+            break
+      if len(o) > 0:
+        break
+    if len(o) > 0:
+      break
+  return o
+
+class TestPattern132(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(pattern132([3, 1, 4, 2]), [1, 4, 2], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(pattern132([1, 2, 3, 4]), [], 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(pattern132([1, 3, 2, 4, 6, 5]), [1, 3, 2], 'example 3')
+
+  def test_ex4(self):
+    self.assertEqual(pattern132([1, 3, 4, 2]), [1, 3, 2], 'example 4')
+
+unittest.main()
diff --git a/challenge-196/roger-bell-west/python/ch-2.py b/challenge-196/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..caece39ab6
--- /dev/null
+++ b/challenge-196/roger-bell-west/python/ch-2.py
@@ -0,0 +1,30 @@
+#! /usr/bin/python3
+
+import unittest
+
+def rangelist(l):
+  o = []
+  start = l[0]
+  prev = start
+  for v in l[1:]:
+    if v != prev + 1:
+      if prev > start:
+        o.append([start, prev])
+      start = v
+    prev = v
+  if prev > start:
+    o.append([start, prev])
+  return o
+
+class TestRangelist(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(rangelist([1, 3, 4, 5, 7]), [[3, 5]], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(rangelist([1, 2, 3, 6, 7, 9]), [[1, 3], [6, 7]], 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(rangelist([0, 1, 2, 4, 5, 6, 8, 9]), [[0, 2], [4, 6], [8, 9]], 'example 3')
+
+unittest.main()
diff --git a/challenge-196/roger-bell-west/raku/ch-1.p6 b/challenge-196/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..76b893074b
--- /dev/null
+++ b/challenge-196/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,28 @@
+#! /usr/bin/perl6
+
+use Test;
+
+plan 4;
+
+is-deeply(pattern132([3, 1, 4, 2]), [1, 4, 2], 'example 1');
+is-deeply(pattern132([1, 2, 3, 4]), [], 'example 2');
+is-deeply(pattern132([1, 3, 2, 4, 6, 5]), [1, 3, 2], 'example 3');
+is-deeply(pattern132([1, 3, 4, 2]), [1, 3, 2], 'example 4');
+
+sub pattern132(@l) {
+    my @o = [];
+    OLOOP:
+    for (0..@l.elems-3) -> $a {
+        for ($a+1..@l.elems-2) -> $b {
+            if (@l[$a] < @l[$b]) {
+                for ($b+1..@l.elems-1) -> $c {
+                    if (@l[$b] > @l[$c] && @l[$a] < @l[$c]) {
+                        @o = [@l[$a], @l[$b], @l[$c]];
+                        last OLOOP;
+                    }
+                }
+            }
+        }
+    }
+    return @o;
+}
diff --git a/challenge-196/roger-bell-west/raku/ch-2.p6 b/challenge-196/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..4ca03d53d5
--- /dev/null
+++ b/challenge-196/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,29 @@
+#! /usr/bin/perl6
+
+use Test;
+
+plan 3;
+
+is-deeply(rangelist([1, 3, 4, 5, 7]), [[3, 5],], 'example 1');
+is-deeply(rangelist([1, 2, 3, 6, 7, 9]), [[1, 3], [6, 7]], 'example 2');
+is-deeply(rangelist([0, 1, 2, 4, 5, 6, 8, 9]),
+          [[0, 2], [4, 6], [8, 9]], 'example 3');
+
+sub rangelist(@l) {
+    my @o;
+    my $start = @l[0];
+    my $prev = $start;
+    for (@l[1..*-1]) -> $v {
+        if ($v != $prev + 1) {
+            if ($prev > $start) {
+                push @o, [$start, $prev];
+            }
+            $start = $v;
+        }
+        $prev = $v;
+    }
+    if ($prev > $start) {
+        push @o, [$start, $prev];
+    }
+    return @o;
+}
diff --git a/challenge-196/roger-bell-west/ruby/ch-1.rb b/challenge-196/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..68aa927a4d
--- /dev/null
+++ b/challenge-196/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,45 @@
+#! /usr/bin/ruby
+
+require 'test/unit'
+
+def pattern132(l)
+  o = []
+  0.upto(l.length-3) do |a|
+    (a+1).upto(l.length-2) do |b|
+      if l[a] < l[b] then
+        (b+1).upto(l.length-1) do |c|
+          if l[b] > l[c] && l[a] < l[c] then
+            o = [l[a], l[b], l[c]]
+            break
+          end
+        end
+      end
+      if o.length > 0 then
+        break
+      end
+    end
+    if o.length > 0 then
+      break
+    end
+  end
+  return o
+end
+
+class TestPattern132 < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal([1, 4, 2], pattern132([3, 1, 4, 2]))
+  end
+
+  def test_ex2
+    assert_equal([], pattern132([1, 2, 3, 4]))
+  end
+
+  def test_ex3
+    assert_equal([1, 3, 2], pattern132([1, 3, 2, 4, 6, 5]))
+  end
+
+  def test_ex4
+    assert_equal([1, 3, 2], pattern132([1, 3, 4, 2]))
+  end
+end
diff --git a/challenge-196/roger-bell-west/ruby/ch-2.rb b/challenge-196/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..f33c64d4bb
--- /dev/null
+++ b/challenge-196/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,37 @@
+#! /usr/bin/ruby
+
+require 'test/unit'
+
+def rangelist(l)
+  o = []
+  start = l[0]
+  prev = start
+  l.slice(1, l.length-1).each do |v|
+    if v != prev + 1 then
+      if prev > start then
+        o.push([start, prev])
+      end
+      start = v
+    end
+    prev = v
+  end
+  if prev > start then
+    o.push([start, prev])
+  end
+  return o
+end
+
+class TestRangeList < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal([[3, 5]], rangelist([1, 3, 4, 5, 7]))
+  end
+
+  def test_ex2
+    assert_equal([[1, 3], [6, 7]], rangelist([1, 2, 3, 6, 7, 9]))
+  end
+
+  def test_ex3
+    assert_equal([[0, 2], [4, 6], [8, 9]], rangelist([0, 1, 2, 4, 5, 6, 8, 9]))
+  end
+end
diff --git a/challenge-196/roger-bell-west/rust/ch-1.rs b/challenge-196/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..9b0db5eb4d
--- /dev/null
+++ b/challenge-196/roger-bell-west/rust/ch-1.rs
@@ -0,0 +1,39 @@
+#! /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!(pattern132(vec![3, 1, 4, 2]), vec![1, 4, 2]);
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(pattern132(vec![1, 2, 3, 4]), vec![]);
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(pattern132(vec![1, 3, 2, 4, 6, 5]), vec![1, 3, 2]);
+}
+
+#[test]
+fn test_ex4() {
+    assert_eq!(pattern132(vec![1, 3, 4, 2]), vec![1, 3, 2]);
+}
+
+fn pattern132(l: Vec<isize>) -> Vec<isize> {
+    let mut o = Vec::new();
+    'outer: for a in 0..=l.len() - 3 {
+        for b in a + 1..=l.len() - 2 {
+            if l[a] < l[b] {
+                for c in b + 1..=l.len() - 1 {
+                    if l[b] > l[c] && l[a] < l[c] {
+                        o = vec![l[a], l[b], l[c]];
+                        break 'outer;
+                    }
+                }
+            }
+        }
+    }
+    o
+}
diff --git a/challenge-196/roger-bell-west/rust/ch-2.rs b/challenge-196/roger-bell-west/rust/ch