Merge pull request #12354 from Firedrake/rogerbw-challenge-330

RogerBW solutions for challenge no. 330

25 files changed, 976 insertions, 0 deletions

diff --git a/challenge-330/roger-bell-west/crystal/ch-1.cr b/challenge-330/roger-bell-west/crystal/ch-1.cr
new file mode 100755
index 0000000000..5507de43ca
--- /dev/null
+++ b/challenge-330/roger-bell-west/crystal/ch-1.cr
@@ -0,0 +1,26 @@
+#! /usr/bin/crystal
+
+def cleardigits(a)
+  out = Array(Char).new
+  a.chars.each do |c|
+    if c >= '0' && c <= '9'
+      out.pop
+    else
+      out.push(c)
+    end
+  end
+  out.join("")
+end
+
+require "spec"
+describe "cleardigits" do
+  it "test_ex1" do
+    cleardigits("cab12").should eq "c"
+  end
+  it "test_ex2" do
+    cleardigits("xy99").should eq ""
+  end
+  it "test_ex3" do
+    cleardigits("pa1erl").should eq "perl"
+  end
+end
diff --git a/challenge-330/roger-bell-west/crystal/ch-2.cr b/challenge-330/roger-bell-west/crystal/ch-2.cr
new file mode 100755
index 0000000000..3841172888
--- /dev/null
+++ b/challenge-330/roger-bell-west/crystal/ch-2.cr
@@ -0,0 +1,28 @@
+#! /usr/bin/crystal
+
+def titlecapital(a)
+  out = Array(String).new
+  a.split(" ").each do |w|
+    p = w.downcase
+    if p.size > 2
+      c = p.chars
+      c[0] = c[0].upcase
+      p = c.join("")
+    end
+    out.push(p)
+  end
+  out.join(" ")
+end
+
+require "spec"
+describe "titlecapital" do
+  it "test_ex1" do
+    titlecapital("PERL IS gREAT").should eq "Perl is Great"
+  end
+  it "test_ex2" do
+    titlecapital("THE weekly challenge").should eq "The Weekly Challenge"
+  end
+  it "test_ex3" do
+    titlecapital("YoU ARE A stAR").should eq "You Are a Star"
+  end
+end
diff --git a/challenge-330/roger-bell-west/javascript/ch-1.js b/challenge-330/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..24b7ffeda4
--- /dev/null
+++ b/challenge-330/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,34 @@
+#! /usr/bin/node
+
+"use strict"
+
+function cleardigits(a) {
+    let out = [];
+    for (let c of a.split("")) {
+        if (c >= '0' && c <= '9') {
+            out.pop();
+        } else {
+            out.push(c);
+        }
+    }
+    return out.join("");
+}
+
+if (cleardigits('cab12') == 'c') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (cleardigits('xy99') == '') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (cleardigits('pa1erl') == 'perl') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-330/roger-bell-west/javascript/ch-2.js b/challenge-330/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..a77e6b52d8
--- /dev/null
+++ b/challenge-330/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,36 @@
+#! /usr/bin/node
+
+"use strict"
+
+function titlecapital(a) {
+    let out = [];
+    for (let w of a.split(" ")) {
+        let p = w.toLowerCase();
+        if (p.length > 2) {
+            let c = p.split("")
+            c[0] = c[0].toUpperCase();
+            p = c.join("");
+        }
+        out.push(p);
+    }
+    return out.join(" ");
+}
+
+if (titlecapital('PERL IS gREAT') == 'Perl is Great') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (titlecapital('THE weekly challenge') == 'The Weekly Challenge') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (titlecapital('YoU ARE A stAR') == 'You Are a Star') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-330/roger-bell-west/kotlin/ch-1.kt b/challenge-330/roger-bell-west/kotlin/ch-1.kt
new file mode 100644
index 0000000000..38b5b3d01f
--- /dev/null
+++ b/challenge-330/roger-bell-west/kotlin/ch-1.kt
@@ -0,0 +1,34 @@
+fun cleardigits(a: String): String {
+    var out = ArrayList<Char>()
+    for (c in a.toCharArray()) {
+        if (c.isDigit()) {
+            out = ArrayList(out.dropLast(1))
+        } else {
+            out.add(c)
+        }
+    }
+    return out.joinToString("")
+}
+
+fun main() {
+
+    if (cleardigits("cab12") == "c") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (cleardigits("xy99") == "") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (cleardigits("pa1erl") == "perl") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-330/roger-bell-west/kotlin/ch-2.kt b/challenge-330/roger-bell-west/kotlin/ch-2.kt
new file mode 100644
index 0000000000..0e1d5c948d
--- /dev/null
+++ b/challenge-330/roger-bell-west/kotlin/ch-2.kt
@@ -0,0 +1,36 @@
+fun titlecapital(a: String): String {
+    var out = ArrayList<String>()
+    for (w in a.split(" ")) {
+        var p = w.lowercase()
+        if (p.length > 2) {
+            var c = p.toCharArray()
+            c[0] = c[0].uppercaseChar()
+            p = c.joinToString("")
+        }
+        out.add(p)
+    }
+    return out.joinToString(" ")
+}
+
+fun main() {
+
+    if (titlecapital("PERL IS gREAT") == "Perl is Great") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (titlecapital("THE weekly challenge") == "The Weekly Challenge") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (titlecapital("YoU ARE A stAR") == "You Are a Star") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-330/roger-bell-west/lua/ch-1.lua b/challenge-330/roger-bell-west/lua/ch-1.lua
new file mode 100755
index 0000000000..f2b1e1f772
--- /dev/null
+++ b/challenge-330/roger-bell-west/lua/ch-1.lua
@@ -0,0 +1,54 @@
+#! /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 cleardigits(a)
+   local out = {}
+   for _, c in ipairs(split(a)) do
+      if c >= "0" and c <= "9" then
+         table.remove(out, #out)
+      else
+         table.insert(out, c)
+         end
+   end
+   return join(out)
+end
+
+if cleardigits("cab12") == "c" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if cleardigits("xy99") == "" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if cleardigits("pa1erl") == "perl" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-330/roger-bell-west/lua/ch-2.lua b/challenge-330/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..06b0d0875d
--- /dev/null
+++ b/challenge-330/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,80 @@
+#! /usr/bin/lua
+
+function split(t)
+   local cl = {}
+   string.gsub(t,
+               "(.)",
+               function(c)
+                  table.insert(cl, c)
+               end
+   )
+   return cl
+end
+
+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 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 titlecapital(a)
+   local out = {}
+   for _, w in ipairs(splits(a, " ")) do
+      local p = string.lower(w)
+      if #p > 2 then
+         local c = split(p)
+         c[1] = string.upper(c[1])
+         p = join(c)
+      end
+      table.insert(out, p)
+   end
+   return joins(out, " ")
+end
+
+if titlecapital("PERL IS gREAT") == "Perl is Great" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if titlecapital("THE weekly challenge") == "The Weekly Challenge" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if titlecapital("YoU ARE A stAR") == "You Are a Star" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-330/roger-bell-west/perl/ch-1.pl b/challenge-330/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..9c94ef69b4
--- /dev/null
+++ b/challenge-330/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,23 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is(cleardigits('cab12'), 'c', 'example 1');
+is(cleardigits('xy99'), '', 'example 2');
+is(cleardigits('pa1erl'), 'perl', 'example 3');
+
+sub cleardigits($a) {
+  my @out;
+  foreach my $c (split '', $a) {
+    if ($c =~ /\d/) {
+      pop @out;
+    } else {
+      push @out, $c;
+    }
+  }
+  join('', @out);
+}
diff --git a/challenge-330/roger-bell-west/perl/ch-2.pl b/challenge-330/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..8ac9cf8db5
--- /dev/null
+++ b/challenge-330/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,23 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is(titlecapital('PERL IS gREAT'), 'Perl is Great', 'example 1');
+is(titlecapital('THE weekly challenge'), 'The Weekly Challenge', 'example 2');
+is(titlecapital('YoU ARE A stAR'), 'You Are a Star', 'example 3');
+
+sub titlecapital($a) {
+  my @out;
+  foreach my $w (split ' ', $a) {
+    my $p = lc($w);
+    if (length($p) > 2) {
+      $p = ucfirst($p);
+    }
+    push @out, $p;
+  }
+  join(' ', @out);
+}
diff --git a/challenge-330/roger-bell-west/postscript/ch-1.ps b/challenge-330/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..6cfdbf4241
--- /dev/null
+++ b/challenge-330/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,70 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/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
+
+/c.isdigit {
+    dup 48 ge exch 57 le and
+} 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.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
+
+/cleardigits {
+    0 dict begin
+    [ exch
+      {
+          dup c.isdigit {
+              pop pop
+          } if
+      } forall
+    ] a2s
+    end
+} bind def
+
+(cleardigits) test.start
+(cab12) cleardigits (c) eq test
+(xy99) cleardigits () eq test
+(pa1erl) cleardigits (perl) eq test
+test.end
diff --git a/challenge-330/roger-bell-west/postscript/ch-2.ps b/challenge-330/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..ad8a3b895f
--- /dev/null
+++ b/challenge-330/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,145 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/Firedrake/postscript-libraries/
+/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.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+/strconcat % (a) (b) -> (ab)  
+{
+    [
+        3 -1 roll
+        s2a aload length
+        2 add -1 roll
+        s2a aload pop
+    ] a2s
+} bind def
+
+/tolower {
+    s2a
+    [ exch
+      {
+          dup dup 65 ge exch 90 le and {
+              32 add
+          } if
+      } forall
+    ] a2s
+} 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
+
+/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
+
+/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
+
+/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
+
+/titlecapital {
+    0 dict begin
+    [ exch
+      ( ) strsplit
+      {
+          tolower
+          dup length 2 gt {
+              s2a /c exch def
+              c 0 c 0 get 223 and put
+              c a2s
+          } if
+      } forall
+    ] ( ) strjoin
+    end
+} bind def
+
+(titlecapital) test.start
+(PERL IS gREAT) titlecapital (Perl is Great) eq test
+(THE weekly challenge) titlecapital (The Weekly Challenge) eq test
+(YoU ARE A stAR) titlecapital (You Are a Star) eq test
+test.end
diff --git a/challenge-330/roger-bell-west/python/ch-1.py b/challenge-330/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..3b88e51361
--- /dev/null
+++ b/challenge-330/roger-bell-west/python/ch-1.py
@@ -0,0 +1,25 @@
+#! /usr/bin/python3
+
+def cleardigits(a):
+  out = []
+  for c in a:
+    if c.isdigit():
+      out.pop()
+    else:
+      out.append(c)
+  return "".join(out)
+
+import unittest
+
+class TestCleardigits(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(cleardigits("cab12"), "c", 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(cleardigits("xy99"), "", 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(cleardigits("pa1erl"), "perl", 'example 3')
+
+unittest.main()
diff --git a/challenge-330/roger-bell-west/python/ch-2.py b/challenge-330/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..f49af0a50a
--- /dev/null
+++ b/challenge-330/roger-bell-west/python/ch-2.py
@@ -0,0 +1,25 @@
+#! /usr/bin/python3
+
+def titlecapital(a):
+  out = []
+  for w in a.split(" "):
+    p = w.lower()
+    if len(p) > 2:
+      p = p.title()
+    out.append(p)
+  return " ".join(out)
+
+import unittest
+
+class TestTitlecapital(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(titlecapital("PERL IS gREAT"), "Perl is Great", 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(titlecapital("THE weekly challenge"), "The Weekly Challenge", 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(titlecapital("YoU ARE A stAR"), "You Are a Star", 'example 3')
+
+unittest.main()
diff --git a/challenge-330/roger-bell-west/raku/ch-1.p6 b/challenge-330/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..6f324f75aa
--- /dev/null
+++ b/challenge-330/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,21 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is(cleardigits('cab12'), 'c', 'example 1');
+is(cleardigits('xy99'), '', 'example 2');
+is(cleardigits('pa1erl'), 'perl', 'example 3');
+
+sub cleardigits($a) {
+    my @out;
+    for $a.comb -> $c {
+        if ($c ~~ /\d/) {
+            @out.pop;
+        } else {
+            @out.push($c);
+        }
+    }
+    @out.join('');
+}
diff --git a/challenge-330/roger-bell-west/raku/ch-2.p6 b/challenge-330/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..6b3042e7fe
--- /dev/null
+++ b/challenge-330/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,21 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is(titlecapital('PERL IS gREAT'), 'Perl is Great', 'example 1');
+is(titlecapital('THE weekly challenge'), 'The Weekly Challenge', 'example 2');
+is(titlecapital('YoU ARE A stAR'), 'You Are a Star', 'example 3');
+
+sub titlecapital($a) {
+    my @out;
+    for $a.split(' ') -> $w {
+        my $p = lc($w);
+        if ($p.chars > 2) {
+            $p = tclc($p);
+        }
+        @out.push($p);
+    }
+    join(' ', @out);
+}
diff --git a/challenge-330/roger-bell-west/ruby/ch-1.rb b/challenge-330/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..62950398d2
--- /dev/null
+++ b/challenge-330/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,31 @@
+#! /usr/bin/ruby
+
+def cleardigits(a)
+  out = Array.new
+  a.chars.each do |c|
+    if c >= '0' && c <= '9'
+      out.pop
+    else
+      out.push(c)
+    end
+  end
+  out.join("")
+end
+
+require 'test/unit'
+
+class TestCleardigits < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal('c', cleardigits('cab12'))
+  end
+
+  def test_ex2
+    assert_equal('', cleardigits('xy99'))
+  end
+
+  def test_ex3
+    assert_equal('perl', cleardigits('pa1erl'))
+  end
+
+end
diff --git a/challenge-330/roger-bell-west/ruby/ch-2.rb b/challenge-330/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..f650488d43
--- /dev/null
+++ b/challenge-330/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,33 @@
+#! /usr/bin/ruby
+
+def titlecapital(a)
+  out = Array.new
+  a.split(" ").each do |w|
+    p = w.downcase
+    if p.size > 2
+      c = p.chars
+      c[0] = c[0].upcase
+      p = c.join("")
+    end
+    out.push(p)
+  end
+  out.join(" ")
+end
+
+require 'test/unit'
+
+class TestTitlecapital < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal('Perl is Great', titlecapital('PERL IS gREAT'))
+  end
+
+  def test_ex2
+    assert_equal('The Weekly Challenge', titlecapital('THE weekly challenge'))
+  end
+
+  def test_ex3
+    assert_equal('You Are a Star', titlecapital('YoU ARE A stAR'))
+  end
+
+end
diff --git a/challenge-330/roger-bell-west/rust/ch-1.rs b/challenge-330/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..a263d8be15
--- /dev/null
+++ b/challenge-330/roger-bell-west/rust/ch-1.rs
@@ -0,0 +1,29 @@
+#! /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!(cleardigits("cab12"), "c");
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(cleardigits("xy99"), "");
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(cleardigits("pa1erl"), "perl");
+}
+
+fn cleardigits(a: &str) -> String {
+    let mut out = Vec::new();
+    for c in a.chars().collect::<Vec<char>>() {
+        if c.is_ascii_digit() {
+            out.pop();
+        } else {
+            out.push(c);
+        }
+    }
+    out.into_iter().collect()
+}
diff --git a/challenge-330/roger-bell-west/rust/ch-2.rs b/challenge-330/roger-bell-west/rust/ch-2.rs
new file mode 100755
index 0000000000..92e84d21aa
--- /dev/null
+++ b/challenge-330/roger-bell-west/rust/ch-2.rs
@@ -0,0 +1,31 @@
+#! /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!(titlecapital("PERL IS gREAT"), "Perl is Great");
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(titlecapital("THE weekly challenge"), "The Weekly Challenge");
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(titlecapital("YoU ARE A stAR"), "You Are a Star");
+}
+
+fn titlecapital(a: &str) -> String {
+    let mut out = Vec::new();
+    for w in a.split(' ') {
+        let mut p = w.to_ascii_lowercase();
+        if p.len() > 2 {
+            let mut c = p.chars().collect::<Vec<char>>();
+            c[0].make_ascii_uppercase();
+            p = c.into_iter().collect();
+        }
+        out.push(p);
+    }
+    out.join(" ")
+}
diff --git a/challenge-330/roger-bell-west/scala/ch-1.scala b/challenge-330/roger-bell-west/scala/ch-1.scala
new file mode 100644
index 0000000000..758051e8ec
--- /dev/null
+++ b/challenge-330/roger-bell-west/scala/ch-1.scala
@@ -0,0 +1,36 @@
+import scala.collection.mutable.ListBuffer
+
+object Cleardigits {
+  def cleardigits(a: String): String = {
+    var out = new ListBuffer[Char]
+    for (c <- a) {
+      if (c.isDigit) {
+        out = out.dropRight(1)
+      } else {
+        out += c
+      }
+    }
+    out.mkString
+  }
+  def main(args: Array[String]) {
+    if (cleardigits("cab12") == "c") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (cleardigits("xy99") == "") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (cleardigits("pa1erl") == "perl") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    println("")
+
+  }
+}
diff --git a/challenge-330/roger-bell-west/scala/ch-2.scala b/challenge-330/roger-bell-west/scala/ch-2.scala
new file mode 100644
index 0000000000..6ef92d54e9
--- /dev/null
+++ b/challenge-330/roger-bell-west/scala/ch-2.scala
@@ -0,0 +1,39 @@
+
+import scala.collection.mutable.ListBuffer
+
+object Titlecapital {
+  def titlecapital(a: String): String = {
+    var out = new ListBuffer[String]
+    for (w <- a.split(" ")) {
+      var p = w.toLowerCase()
+      if (p.length > 2) {
+        var c = p.to[ListBuffer]
+        c(0) = c(0).toUpper
+        p = c.mkString
+      }
+      out += p
+    }
+    out.mkString(" ")
+  }
+  def main(args: Array[String]) {
+    if (titlecapital("PERL IS gREAT") == "Perl is Great") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (titlecapital("THE weekly challenge") == "The Weekly Challenge") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (titlecapital("YoU ARE A stAR") == "You Are a Star") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    println("")
+
+  }
+}
diff --git a/challenge-330/roger-bell-west/tests.json b/challenge-330/r