Merge pull request #10537 from Firedrake/rogerbw-challenge-280

RogerBW solutions for challenge no. 280

23 files changed, 823 insertions, 0 deletions

diff --git a/challenge-280/roger-bell-west/crystal/ch-1.cr b/challenge-280/roger-bell-west/crystal/ch-1.cr
new file mode 100755
index 0000000000..7533649fda
--- /dev/null
+++ b/challenge-280/roger-bell-west/crystal/ch-1.cr
@@ -0,0 +1,24 @@
+#! /usr/bin/crystal
+require "spec"
+describe "twiceappearance" do
+  it "test_ex1" do
+    twiceappearance("acbddbca").should eq 'd'
+  end
+  it "test_ex2" do
+    twiceappearance("abccd").should eq 'c'
+  end
+  it "test_ex3" do
+    twiceappearance("abcdabbb").should eq 'a'
+  end
+end
+
+def twiceappearance(a)
+  m = Set(Char).new
+  a.chars.each do |c|
+    if m.includes?(c)
+      return c
+    end
+    m.add(c)
+  end
+  return 'x'
+end
diff --git a/challenge-280/roger-bell-west/crystal/ch-2.cr b/challenge-280/roger-bell-west/crystal/ch-2.cr
new file mode 100755
index 0000000000..fa7582a5b2
--- /dev/null
+++ b/challenge-280/roger-bell-west/crystal/ch-2.cr
@@ -0,0 +1,29 @@
+#! /usr/bin/crystal
+require "spec"
+describe "countasterisks" do
+  it "test_ex1" do
+    countasterisks("p|*e*rl|w**e|*ekly|").should eq 2
+  end
+  it "test_ex2" do
+    countasterisks("perl").should eq 0
+  end
+  it "test_ex3" do
+    countasterisks("th|ewe|e**|k|l***ych|alleng|e").should eq 5
+  end
+end
+
+def countasterisks(a)
+  out = 0
+  active = true
+  a.chars.each do |c|
+    case c
+    when '|'
+      active = !active
+    when '*'
+      if active
+        out += 1
+      end
+    end
+  end
+  out
+end
diff --git a/challenge-280/roger-bell-west/javascript/ch-1.js b/challenge-280/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..e480c21218
--- /dev/null
+++ b/challenge-280/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,34 @@
+#! /usr/bin/node
+
+"use strict"
+
+function twiceappearance(a) {
+    let m = new Set;
+    for (let c of a.split("")) {
+        if (m.has(c)) {
+            return c;
+        } else {
+            m.add(c);
+        }
+    }
+    return 'x';
+}
+
+if (twiceappearance('acbddbca') == 'd') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (twiceappearance('abccd') == 'c') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (twiceappearance('abcdabbb') == 'a') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-280/roger-bell-west/javascript/ch-2.js b/challenge-280/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..c23c15ab27
--- /dev/null
+++ b/challenge-280/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,39 @@
+#! /usr/bin/node
+
+"use strict"
+
+function countasterisks(a) {
+    let out = 0
+    let active = true
+    for (let c of a.split("")) {
+        switch (c) {
+        case '|':
+            active = !active;
+            break;
+        case '*':
+            if (active) {
+                out += 1;
+            }
+        }
+    }
+    return out
+}
+
+if (countasterisks('p|*e*rl|w**e|*ekly|') == 2) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (countasterisks('perl') == 0) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (countasterisks('th|ewe|e**|k|l***ych|alleng|e') == 5) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-280/roger-bell-west/kotlin/ch-1.kt b/challenge-280/roger-bell-west/kotlin/ch-1.kt
new file mode 100644
index 0000000000..e7ee6c12b6
--- /dev/null
+++ b/challenge-280/roger-bell-west/kotlin/ch-1.kt
@@ -0,0 +1,34 @@
+fun twiceappearance(a: String): Char {
+    var m = mutableSetOf<Char>()
+    for (c in a.toList()) {
+        if (m.contains(c)) {
+            return c
+        } else {
+            m.add(c)
+        }
+    }
+    return 'x'
+}
+
+fun main() {
+
+    if (twiceappearance("acbddbca") == 'd') {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (twiceappearance("abccd") == 'c') {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (twiceappearance("abcdabbb") == 'a') {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-280/roger-bell-west/kotlin/ch-2.kt b/challenge-280/roger-bell-west/kotlin/ch-2.kt
new file mode 100644
index 0000000000..0c9e46a8a8
--- /dev/null
+++ b/challenge-280/roger-bell-west/kotlin/ch-2.kt
@@ -0,0 +1,38 @@
+fun countasterisks(a: String): Int {
+    var out = 0
+    var active = true
+    for (c in a.toList()) {
+        when(c) {
+            '|' -> { active = !active }
+            '*' -> {
+                if (active) {
+                    out += 1
+                }
+            }
+        }
+    }
+    return out
+}
+
+fun main() {
+
+    if (countasterisks("p|*e*rl|w**e|*ekly|") == 2) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (countasterisks("perl") == 0) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (countasterisks("th|ewe|e**|k|l***ych|alleng|e") == 5) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-280/roger-bell-west/lua/ch-1.lua b/challenge-280/roger-bell-west/lua/ch-1.lua
new file mode 100755
index 0000000000..fddcb8f968
--- /dev/null
+++ b/challenge-280/roger-bell-west/lua/ch-1.lua
@@ -0,0 +1,45 @@
+#! /usr/bin/lua
+
+function split(t)
+   local cl = {}
+   string.gsub(t,
+               "(.)",
+               function(c)
+                  table.insert(cl, c)
+               end
+   )
+   return cl
+end
+
+function twiceappearance(a)
+   local m = {}
+   for _, c in ipairs(split(a)) do
+      if m[c] ~= nil then
+         return c
+      end
+      m[c] = true
+   end
+   return 'x'
+end
+
+if twiceappearance("acbddbca") == "d" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if twiceappearance("abccd") == "c" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if twiceappearance("abcdabbb") == "a" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-280/roger-bell-west/lua/ch-2.lua b/challenge-280/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..df83492871
--- /dev/null
+++ b/challenge-280/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,51 @@
+#! /usr/bin/lua
+
+
+function split(t)
+   local cl = {}
+   string.gsub(t,
+               "(.)",
+               function(c)
+                  table.insert(cl, c)
+               end
+   )
+   return cl
+end
+
+function countasterisks(a)
+   local out = 0
+   local active = true
+   for _, c in ipairs(split(a)) do
+      if c == '|' then
+         active = not active
+      end
+      if c == '*' then
+         if active then
+            out = out + 1
+         end
+      end
+   end
+   return out
+end
+
+if countasterisks("p|*e*rl|w**e|*ekly|") == 2 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if countasterisks("perl") == 0 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if countasterisks("th|ewe|e**|k|l***ych|alleng|e") == 5 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-280/roger-bell-west/perl/ch-1.pl b/challenge-280/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..b459221848
--- /dev/null
+++ b/challenge-280/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,22 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is(twiceappearance('acbddbca'), 'd', 'example 1');
+is(twiceappearance('abccd'), 'c', 'example 2');
+is(twiceappearance('abcdabbb'), 'a', 'example 3');
+
+sub twiceappearance($a) {
+  my %m;
+  foreach my $c (split '', $a) {
+    if (exists $m{$c}) {
+      return $c;
+    }
+    $m{$c} = 1;
+  }
+  return 'x';
+}
diff --git a/challenge-280/roger-bell-west/perl/ch-2.pl b/challenge-280/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..709b441406
--- /dev/null
+++ b/challenge-280/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,26 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is(countasterisks('p|*e*rl|w**e|*ekly|'), 2, 'example 1');
+is(countasterisks('perl'), 0, 'example 2');
+is(countasterisks('th|ewe|e**|k|l***ych|alleng|e'), 5, 'example 3');
+
+sub countasterisks($a) {
+  my $out = 0;
+  my $active = 1;
+  foreach my $c (split '', $a) {
+    if ($c eq '|') {
+      $active = 1 - $active;
+    } elsif ($c eq '*') {
+      if ($active) {
+        $out++;
+      }
+    }
+  }
+  $out;
+}
diff --git a/challenge-280/roger-bell-west/postscript/ch-1.ps b/challenge-280/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..7e3c46aec8
--- /dev/null
+++ b/challenge-280/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,74 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/Firedrake/postscript-libraries/
+/s2a {
+    [ exch { } forall ]
+} 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 {
+    /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
+
+/test.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+
+% end included library code
+
+/twiceappearance {
+    0 dict begin
+    /m 0 dict def
+    (x) exch
+    s2a {
+        /c exch def
+        m c known {
+            pop [ c ] a2s
+            exit
+        } {
+            m c true put
+        } ifelse
+    } forall
+    end
+} bind def
+
+(twiceappearance) test.start
+(acbddbca) twiceappearance (d) eq test
+(abccd) twiceappearance (c) eq test
+(abcdabbb) twiceappearance (a) eq test
+test.end
diff --git a/challenge-280/roger-bell-west/postscript/ch-2.ps b/challenge-280/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..301b6ea926
--- /dev/null
+++ b/challenge-280/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,64 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/Firedrake/postscript-libraries/
+/s2a {
+    [ exch { } forall ]
+} bind def
+
+/test.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} 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
+
+/countasterisks {
+    0 dict begin
+    /out 0 def
+    /active true def
+    s2a {
+        /c exch def
+        c 124 eq {
+            /active active not def
+        } if
+        c 42 eq active and {
+            /out out 1 add def
+        } if
+    } forall
+    out
+    end
+} bind def
+
+(countasterisks) test.start
+(p|*e*rl|w**e|*ekly|) countasterisks 2 eq test
+(perl) countasterisks 0 eq test
+(th|ewe|e**|k|l***ych|alleng|e) countasterisks 5 eq test
+test.end
diff --git a/challenge-280/roger-bell-west/python/ch-1.py b/challenge-280/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..c4c8287c5a
--- /dev/null
+++ b/challenge-280/roger-bell-west/python/ch-1.py
@@ -0,0 +1,24 @@
+#! /usr/bin/python3
+
+def twiceappearance(a):
+  m = set()
+  for c in a:
+    if c in m:
+      return c
+    m.add(c)
+  return 'x'
+
+import unittest
+
+class TestTwiceappearance(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(twiceappearance("acbddbca"), "d", 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(twiceappearance("abccd"), "c", 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(twiceappearance("abcdabbb"), "a", 'example 3')
+
+unittest.main()
diff --git a/challenge-280/roger-bell-west/python/ch-2.py b/challenge-280/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..c03eba6bab
--- /dev/null
+++ b/challenge-280/roger-bell-west/python/ch-2.py
@@ -0,0 +1,28 @@
+#! /usr/bin/python3
+
+def countasterisks(a):
+  out = 0
+  active = True
+  for c in a:
+    match c:
+      case '|':
+        active = not active
+      case '*':
+        if active:
+          out += 1
+  return out
+
+import unittest
+
+class TestCountasterisks(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(countasterisks("p|*e*rl|w**e|*ekly|"), 2, 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(countasterisks("perl"), 0, 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(countasterisks("th|ewe|e**|k|l***ych|alleng|e"), 5, 'example 3')
+
+unittest.main()
diff --git a/challenge-280/roger-bell-west/raku/ch-1.p6 b/challenge-280/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..3ee18151de
--- /dev/null
+++ b/challenge-280/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,20 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is(twiceappearance('acbddbca'), 'd', 'example 1');
+is(twiceappearance('abccd'), 'c', 'example 2');
+is(twiceappearance('abcdabbb'), 'a', 'example 3');
+
+sub twiceappearance($a) {
+    my %m = SetHash.new;
+    for $a.comb -> $c {
+        if (%m{$c}:exists) {
+            return $c
+        }
+        %m{$c}++;
+    }
+    return 'x';
+}
diff --git a/challenge-280/roger-bell-west/raku/ch-2.p6 b/challenge-280/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..59f966d656
--- /dev/null
+++ b/challenge-280/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,27 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is(countasterisks('p|*e*rl|w**e|*ekly|'), 2, 'example 1');
+is(countasterisks('perl'), 0, 'example 2');
+is(countasterisks('th|ewe|e**|k|l***ych|alleng|e'), 5, 'example 3');
+
+sub countasterisks($a) {
+    my $out = 0;
+    my $active = True;
+    for $a.comb -> $c {
+        given $c {
+            when '|' {
+                $active = !$active;
+            }
+            when '*' {
+                if ($active) {
+                    $out++;
+                }
+            }
+        }
+    }
+    $out;
+}
diff --git a/challenge-280/roger-bell-west/ruby/ch-1.rb b/challenge-280/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..a23d04a809
--- /dev/null
+++ b/challenge-280/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,32 @@
+#! /usr/bin/ruby
+
+require 'set'
+
+def twiceappearance(a)
+  m = Set.new
+  a.chars.each do |c|
+    if m.include?(c)
+      return c
+    end
+    m.add(c)
+  end
+  return 'x'
+end
+
+require 'test/unit'
+
+class TestTwiceappearance < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal('d', twiceappearance('acbddbca'))
+  end
+
+  def test_ex2
+    assert_equal('c', twiceappearance('abccd'))
+  end
+
+  def test_ex3
+    assert_equal('a', twiceappearance('abcdabbb'))
+  end
+
+end
diff --git a/challenge-280/roger-bell-west/ruby/ch-2.rb b/challenge-280/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..1987b0273f
--- /dev/null
+++ b/challenge-280/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,35 @@
+#! /usr/bin/ruby
+
+def countasterisks(a)
+  out = 0
+  active = true
+  a.chars.each do |c|
+    case c
+    when '|'
+      active = !active
+    when '*'
+      if active
+        out += 1
+      end
+    end
+  end
+  out
+end
+
+require 'test/unit'
+
+class TestCountasterisks < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal(2, countasterisks('p|*e*rl|w**e|*ekly|'))
+  end
+
+  def test_ex2
+    assert_equal(0, countasterisks('perl'))
+  end
+
+  def test_ex3
+    assert_equal(5, countasterisks('th|ewe|e**|k|l***ych|alleng|e'))
+  end
+
+end
diff --git a/challenge-280/roger-bell-west/rust/ch-1.rs b/challenge-280/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..d1a67d45f2
--- /dev/null
+++ b/challenge-280/roger-bell-west/rust/ch-1.rs
@@ -0,0 +1,30 @@
+#! /bin/sh
+//usr/bin/env rustc --test $0 -o ${0}x && ./${0}x --nocapture; rm -f ${0}x ; exit
+
+use std::collections::HashSet;
+
+#[test]
+fn test_ex1() {
+    assert_eq!(twiceappearance("acbddbca"), 'd');
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(twiceappearance("abccd"), 'c');
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(twiceappearance("abcdabbb"), 'a');
+}
+
+fn twiceappearance(a: &str) -> char {
+    let mut m = HashSet::new();
+    for c in a.chars() {
+        if m.contains(&c) {
+            return c;
+        }
+        m.insert(c);
+    }
+    'x'
+}
diff --git a/challenge-280/roger-bell-west/rust/ch-2.rs b/challenge-280/roger-bell-west/rust/ch-2.rs
new file mode 100755
index 0000000000..23d1818ebb
--- /dev/null
+++ b/challenge-280/roger-bell-west/rust/ch-2.rs
@@ -0,0 +1,34 @@
+#! /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!(countasterisks("p|*e*rl|w**e|*ekly|"), 2);
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(countasterisks("perl"), 0);
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(countasterisks("th|ewe|e**|k|l***ych|alleng|e"), 5);
+}
+
+fn countasterisks(a: &str) -> u32 {
+    let mut out = 0;
+    let mut active = true;
+    for c in a.chars() {
+        match c {
+            '|' => active = !active,
+            '*' => {
+                if active {
+                    out += 1
+                }
+            }
+            _ => {}
+        }
+    }
+    out
+}
diff --git a/challenge-280/roger-bell-west/scala/ch-1.scala b/challenge-280/roger-bell-west/scala/ch-1.scala
new file mode 100644
index 0000000000..0852a2f09d
--- /dev/null
+++ b/challenge-280/roger-bell-west/scala/ch-1.scala
@@ -0,0 +1,41 @@
+import scala.collection.mutable
+
+object Twiceappearance {
+  def twiceappearance(a: String): Char = {
+    var m = mutable.Set.empty[Char]
+    var ex = false
+    var out = 'x'
+    for (c <- a.toList) {
+      if (!ex) {
+        if (m.contains(c)) {
+          out = c
+          ex = true
+        } else {
+          m += c
+        }
+      }
+    }
+    return out
+  }
+  def main(args: Array[String]) {
+    if (twiceappearance("acbddbca") == 'd') {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (twiceappearance("abccd") == 'c') {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (twiceappearance("abcdabbb") == 'a') {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    println("")
+
+  }
+}
diff --git a/challenge-280/roger-bell-west/scala/ch-2.scala b/challenge-280/roger-bell-west/scala/ch-2.scala
new file mode 100644
index 0000000000..4e10fd755b
--- /dev/null
+++ b/challenge-280/roger-bell-west/scala/ch-2.scala
@@ -0,0 +1,40 @@
+
+object Countasterisks {
+  def countasterisks(a: String): Int = {
+    var out = 0
+    var active = true
+    for (c <- a.toList) {
+      c match {
+        case '|' => { active = !active }
+        case '*' => {
+          if (active) {
+            out += 1
+          }
+        }
+        case _ => { }
+      }
+    }
+    return out
+  }
+  def main(args: Array[String]) {
+    if (countasterisks("p|*e*rl|w**e|*ekly|") == 2) {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (countasterisks("perl") == 0) {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (countasterisks("th|ewe|e**|k|l***ych|alleng|e") == 5) {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    println("")
+
+  }
+}
diff --git a/challenge-280/roger-bell-west/tests.json b/challenge-280/roger-bell-west/tests.json
new file mode 100644
index 0000000000..23527596b2
--- /dev/null
+++ b/challenge-280/roger-bell-west/tests.json
@@ -0,0 +1,32 @@
+{
+    "ch-1" : [
+        {
+            "function" : "twiceappearance",
+            "arguments" : "acbddbca",
+            "result" : "d"
+        },
+        {
+            "arguments" : "abccd",
+            "result" : "c"
+        },
+        {
+            "arguments" : "abcdabbb",
+            "result" : "a"
+        }
+    ],
+    "ch-2" : [
+        {
+            "function" : "countasterisks",
+            "arguments" : "p|*e*rl|w**e|*ekly|",
+            "result" : 2
+        },
+        {
+            "arguments" : "perl",
+            "result" : 0
+        },
+        {
+            "arguments" : "th|ewe|e**|k|l***ych|alleng|e",
+            "result" : 5
+        }
+    ]
+}