RogerBW solutions for challenge no. 252

21 files changed, 759 insertions, 0 deletions

diff --git a/challenge-252/roger-bell-west/javascript/ch-1.js b/challenge-252/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..079ec31913
--- /dev/null
+++ b/challenge-252/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,26 @@
+#! /usr/bin/node
+
+"use strict"
+
+function specialnumbers(a) {
+    let t = 0;
+    a.forEach((n, i) => {
+        if (a.length % (i + 1) == 0) {
+            t += n * n;
+        }
+    });
+    return t;
+}
+
+if (specialnumbers([1, 2, 3, 4]) == 21) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (specialnumbers([2, 7, 1, 19, 18, 3]) == 63) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-252/roger-bell-west/javascript/ch-2.js b/challenge-252/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..d5c713cae2
--- /dev/null
+++ b/challenge-252/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,58 @@
+#! /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 uniquesumzero(n) {
+    if (n == 1) {
+        return [0];
+    }
+    let p = Array(n - 1).fill().map((element, index) => index + 1);
+    p.push(-n * (n-1) / 2);
+    return p;
+}
+
+if (deepEqual(uniquesumzero(5), [1, 2, 3, 4, -10])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(uniquesumzero(3), [1, 2, -3])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(uniquesumzero(1), [0])) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-252/roger-bell-west/kotlin/ch-1.kt b/challenge-252/roger-bell-west/kotlin/ch-1.kt
new file mode 100644
index 0000000000..7bff2fa828
--- /dev/null
+++ b/challenge-252/roger-bell-west/kotlin/ch-1.kt
@@ -0,0 +1,26 @@
+fun specialnumbers(a: List<Int>): Int {
+    var t = 0
+    a.forEachIndexed {i, n ->
+                          if (a.size % (i + 1) == 0) {
+                              t += n * n
+                          }
+    }
+    return t
+}
+
+fun main() {
+
+    if (specialnumbers(listOf(1, 2, 3, 4)) == 21) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (specialnumbers(listOf(2, 7, 1, 19, 18, 3)) == 63) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-252/roger-bell-west/kotlin/ch-2.kt b/challenge-252/roger-bell-west/kotlin/ch-2.kt
new file mode 100644
index 0000000000..38fc67172e
--- /dev/null
+++ b/challenge-252/roger-bell-west/kotlin/ch-2.kt
@@ -0,0 +1,31 @@
+  fun uniquesumzero(n: Int): List<Int> {
+    if (n == 1) {
+      return listOf(0)
+    }
+    var p = ArrayList(generateSequence(1) { it + 1 }.take(n - 1).toList())
+    p.add(-n * (n-1) / 2)
+    return p.toList()
+  }
+
+fun main() {
+
+    if (uniquesumzero(5) == listOf(1, 2, 3, 4, -10)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (uniquesumzero(3) == listOf(1, 2, -3)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (uniquesumzero(1) == listOf(0)) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-252/roger-bell-west/lua/ch-1.lua b/challenge-252/roger-bell-west/lua/ch-1.lua
new file mode 100755
index 0000000000..de7ec27e60
--- /dev/null
+++ b/challenge-252/roger-bell-west/lua/ch-1.lua
@@ -0,0 +1,26 @@
+#! /usr/bin/lua
+
+function specialnumbers(a)
+   local t = 0
+   for i, n in ipairs(a) do
+      if #a % i == 0 then
+         t = t + n * n
+      end
+   end
+   return t
+end
+
+if specialnumbers({1, 2, 3, 4}) == 21 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if specialnumbers({2, 7, 1, 19, 18, 3}) == 63 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-252/roger-bell-west/lua/ch-2.lua b/challenge-252/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..b262f82a1e
--- /dev/null
+++ b/challenge-252/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,64 @@
+#! /usr/bin/lua
+
+-- by Michael Anderson at
+-- https://stackoverflow.com/questions/8722620/comparing-two-index-tables-by-index-value-in-lua
+-- modified by Roger
+function recursive_compare(t1,t2)
+  -- Use usual comparison first.
+  if t1==t2 then return true end
+  -- We only support non-default behavior for tables
+  if (type(t1)~="table") then return false end
+  -- They better have the same metatables
+  local mt1 = getmetatable(t1)
+  local mt2 = getmetatable(t2)
+  if( not recursive_compare(mt1,mt2) ) then return false end
+  -- Build list of all keys
+  local kk = {}
+  for k1, _ in pairs(t1) do
+     kk[k1] = true
+  end
+  for k2, _ in pairs(t2) do
+     kk[k2] = true
+  end
+  -- Check each key that exists in at least one table
+  for _, k in ipairs(kk) do
+     if (not recursive_compare(t1[k], t2[k])) then
+        return false
+     end
+  end
+  return true
+end
+
+function uniquesumzero(n)
+   if n == 1 then
+      return { 0 }
+   end
+   local p = {}
+   for j = 1, n-1 do
+      table.insert(p, j)
+   end
+   table.insert(p, -n * (n-1) / 2)
+   return p
+end
+
+if recursive_compare(uniquesumzero(5), {1, 2, 3, 4, -10}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(uniquesumzero(3), {1, 2, -3}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if recursive_compare(uniquesumzero(1), {0}) then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-252/roger-bell-west/perl/ch-1.pl b/challenge-252/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..add86f3523
--- /dev/null
+++ b/challenge-252/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,20 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 2;
+
+is(specialnumbers([1, 2, 3, 4]), 21, 'example 1');
+is(specialnumbers([2, 7, 1, 19, 18, 3]), 63, 'example 2');
+
+sub specialnumbers($a) {
+  my $t = 0;
+  foreach my $i (0 .. $#{$a}) {
+    if ((scalar @{$a}) % ($i + 1) == 0) {
+      $t += $a->[$i] * $a->[$i];
+    }
+  }
+  return $t;
+}
diff --git a/challenge-252/roger-bell-west/perl/ch-2.pl b/challenge-252/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..69e52e5f3a
--- /dev/null
+++ b/challenge-252/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,20 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is_deeply(uniquesumzero(5), [1, 2, 3, 4, -10], 'example 1');
+is_deeply(uniquesumzero(3), [1, 2, -3], 'example 2');
+is_deeply(uniquesumzero(1), [0], 'example 3');
+
+sub uniquesumzero($n) {
+  if ($n == 1) {
+    return [0];
+  }
+  my @p = (1 .. $n - 1);
+  push @p, -$n * ($n - 1) / 2;
+  return \@p;
+}
diff --git a/challenge-252/roger-bell-west/postscript/ch-1.ps b/challenge-252/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..7a105b6057
--- /dev/null
+++ b/challenge-252/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,100 @@
+%!PS
+
+% begin included library code
+% see https://codeberg.org/Firedrake/postscript-libraries/
+/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
+
+/filter { % array proc(bool) -> array
+    1 dict begin
+    /p exch def
+    [ exch
+      {
+          dup p not
+          {
+              pop
+          } if
+      } forall
+    ]
+    end
+} bind def
+
+/map { % array proc -> array
+    2 dict begin
+    /p exch def
+    [ exch
+      {
+          p
+      } forall
+    ]
+    end
+} bind def
+
+/test.end {
+    ( ) print
+    test.count 0 gt {
+        (Passed ) print
+        test.pass (...) cvs print
+        (/) print
+        test.count (...) cvs print
+        ( \() print
+        test.pass 100 mul test.count idiv (...) cvs print
+        (%\)) print
+        (\r\n) print
+    } if
+} bind def
+
+/test.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+/enumerate.array {
+    1 dict begin
+    /a exch def
+    [
+      0 1 a length 1 sub {
+          [ exch dup a exch get ]
+      } for
+    ]
+    end
+} bind def
+
+/reduce { % array proc -> value
+    2 dict begin
+    /p exch def
+    /a exch def
+    a 0 get
+    1 1 a length 1 sub {
+        a exch get
+        p
+    } for
+    end
+} bind def
+
+
+% end included library code
+
+/specialnumbers {
+    0 dict begin
+    dup /l exch length def
+    enumerate.array
+    { 0 get 1 add l exch mod 0 eq } filter
+    { 1 get dup mul } map
+    { add } reduce
+    end
+} bind def
+
+(specialnumbers) test.start
+[1 2 3 4] specialnumbers 21 eq test
+[2 7 1 19 18 3] specialnumbers 63 eq test
+test.end
diff --git a/challenge-252/roger-bell-west/postscript/ch-2.ps b/challenge-252/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..b3797f0aea
--- /dev/null
+++ b/challenge-252/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,116 @@
+%!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
+
+/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
+
+/test.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+
+% end included library code
+
+/uniquesumzero {
+    0 dict begin
+    /n exch def
+    n 1 eq {
+        [ 0 ]
+    } {
+        [
+            1 1 n 1 sub {
+            } for
+            n dup 1 sub mul neg 2 idiv
+        ]
+    } ifelse
+    end
+} bind def
+
+(uniquesumzero) test.start
+5 uniquesumzero [1 2 3 4 -10] deepeq test
+3 uniquesumzero [1 2 -3] deepeq test
+1 uniquesumzero [0] deepeq test
+test.end
diff --git a/challenge-252/roger-bell-west/python/ch-1.py b/challenge-252/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..4e89dbfcc6
--- /dev/null
+++ b/challenge-252/roger-bell-west/python/ch-1.py
@@ -0,0 +1,20 @@
+#! /usr/bin/python3
+
+def specialnumbers(a):
+  t = 0
+  for i, v in enumerate(a):
+    if len(a) % (i + 1) == 0:
+      t += v * v
+  return t
+
+import unittest
+
+class TestSpecialnumbers(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(specialnumbers([1, 2, 3, 4]), 21, 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(specialnumbers([2, 7, 1, 19, 18, 3]), 63, 'example 2')
+
+unittest.main()
diff --git a/challenge-252/roger-bell-west/python/ch-2.py b/challenge-252/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..f8bf61a527
--- /dev/null
+++ b/challenge-252/roger-bell-west/python/ch-2.py
@@ -0,0 +1,23 @@
+#! /usr/bin/python3
+
+def uniquesumzero(n):
+  if n == 1:
+    return [0]
+  p = list(range(1, n))
+  p.append(-n * (n - 1) / 2)
+  return p
+
+import unittest
+
+class TestUniquesumzero(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(uniquesumzero(5), [1, 2, 3, 4, -10], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(uniquesumzero(3), [1, 2, -3], 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(uniquesumzero(1), [0], 'example 3')
+
+unittest.main()
diff --git a/challenge-252/roger-bell-west/raku/ch-1.p6 b/challenge-252/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..4290a75ffa
--- /dev/null
+++ b/challenge-252/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,18 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 2;
+
+is(specialnumbers([1, 2, 3, 4]), 21, 'example 1');
+is(specialnumbers([2, 7, 1, 19, 18, 3]), 63, 'example 2');
+
+sub specialnumbers(@a) {
+    my $t = 0;
+    for (0 .. @a.end) -> $i {
+        if (@a.elems % ($i + 1) == 0) {
+            $t += @a[$i] * @a[$i];
+        }
+    }
+    return $t;
+}
diff --git a/challenge-252/roger-bell-west/raku/ch-2.p6 b/challenge-252/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..8f3935d7e1
--- /dev/null
+++ b/challenge-252/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,18 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is-deeply(uniquesumzero(5), [1, 2, 3, 4, -10], 'example 1');
+is-deeply(uniquesumzero(3), [1, 2, -3], 'example 2');
+is-deeply(uniquesumzero(1), [0], 'example 3');
+
+sub uniquesumzero($n) {
+    if ($n == 1) {
+        return [0];
+    }
+    my @p = [1 .. $n - 1];
+    @p.push(-$n * ($n - 1) div 2);
+    return @p;
+}
diff --git a/challenge-252/roger-bell-west/ruby/ch-1.rb b/challenge-252/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..3302e4a406
--- /dev/null
+++ b/challenge-252/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,25 @@
+#! /usr/bin/ruby
+
+def specialnumbers(a)
+  t = 0
+  a.each_with_index do |n, i|
+    if a.length % (i + 1) == 0 then
+      t += n * n
+    end
+  end
+  return t
+end
+
+require 'test/unit'
+
+class TestSpecialnumbers < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal(21, specialnumbers([1, 2, 3, 4]))
+  end
+
+  def test_ex2
+    assert_equal(63, specialnumbers([2, 7, 1, 19, 18, 3]))
+  end
+
+end
diff --git a/challenge-252/roger-bell-west/ruby/ch-2.rb b/challenge-252/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..3568fe1292
--- /dev/null
+++ b/challenge-252/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,28 @@
+#! /usr/bin/ruby
+
+def uniquesumzero(n)
+    if n == 1 then
+        return [0]
+    end
+    p = Array.new(n - 1) {|i| i + 1}
+    p.push(-n * (n-1) / 2)
+    return p
+end
+
+require 'test/unit'
+
+class TestUniquesumzero < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal([1, 2, 3, 4, -10], uniquesumzero(5))
+  end
+
+  def test_ex2
+    assert_equal([1, 2, -3], uniquesumzero(3))
+  end
+
+  def test_ex3
+    assert_equal([0], uniquesumzero(1))
+  end
+
+end
diff --git a/challenge-252/roger-bell-west/rust/ch-1.rs b/challenge-252/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..76fcc063d4
--- /dev/null
+++ b/challenge-252/roger-bell-west/rust/ch-1.rs
@@ -0,0 +1,20 @@
+#! /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!(specialnumbers(vec![1, 2, 3, 4]), 21);
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(specialnumbers(vec![2, 7, 1, 19, 18, 3]), 63);
+}
+
+fn specialnumbers(a: Vec<u32>) -> u32 {
+    a.iter()
+        .enumerate()
+        .filter(|(i, _n)| a.len() % (i + 1) == 0)
+        .map(|(_i, n)| n * n)
+        .sum()
+}
diff --git a/challenge-252/roger-bell-west/rust/ch-2.rs b/challenge-252/roger-bell-west/rust/ch-2.rs
new file mode 100755
index 0000000000..a23ce60251
--- /dev/null
+++ b/challenge-252/roger-bell-west/rust/ch-2.rs
@@ -0,0 +1,26 @@
+#! /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!(uniquesumzero(5), vec![1, 2, 3, 4, -10]);
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(uniquesumzero(3), vec![1, 2, -3]);
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(uniquesumzero(1), vec![0]);
+}
+
+fn uniquesumzero(n: i32) -> Vec<i32> {
+    if n == 1 {
+        return vec![0];
+    }
+    let mut p = (1..n).collect::<Vec<i32>>();
+    p.push(-n * (n - 1) / 2);
+    p
+}
diff --git a/challenge-252/roger-bell-west/scala/ch-1.scala b/challenge-252/roger-bell-west/scala/ch-1.scala
new file mode 100644
index 0000000000..01edd50657
--- /dev/null
+++ b/challenge-252/roger-bell-west/scala/ch-1.scala
@@ -0,0 +1,27 @@
+
+object Specialnumbers {
+  def specialnumbers(a: List[Int]): Int = {
+    var t = 0
+    for ((n, i) <- a.zipWithIndex) {
+      if (a.length % (i + 1) == 0) {
+        t += n * n
+      }
+    }
+    return t
+  }
+  def main(args: Array[String]) {
+      if (specialnumbers(List(1, 2, 3, 4)) == 21) {
+          print("Pass")
+      } else {
+          print("Fail")
+      }
+      print(" ")
+      if (specialnumbers(List(2, 7, 1, 19, 18, 3)) == 63) {
+          print("Pass")
+      } else {
+          print("Fail")
+      }
+      println("")
+
+  }
+}
diff --git a/challenge-252/roger-bell-west/scala/ch-2.scala b/challenge-252/roger-bell-west/scala/ch-2.scala
new file mode 100644
index 0000000000..f4d30ac857
--- /dev/null
+++ b/challenge-252/roger-bell-west/scala/ch-2.scala
@@ -0,0 +1,33 @@
+import scala.collection.mutable.ListBuffer
+
+object Uniquesumzero {
+  def uniquesumzero(n: Int): List[Int] = {
+    if (n == 1) {
+      return List(0)
+    }
+    var p = List.range(1, n).to[ListBuffer]
+    p += -n * (n-1) / 2
+    return p.toList
+  }
+  def main(args: Array[String]) {
+      if (uniquesumzero(5) == List(1, 2, 3, 4, -10)) {
+          print("Pass")
+      } else {
+          print("Fail")
+      }
+      print(" ")
+      if (uniquesumzero(3) == List(1, 2, -3)) {
+          print("Pass")
+      } else {
+          print("Fail")
+      }
+      print(" ")
+      if (uniquesumzero(1) == List(0)) {
+          print("Pass")
+      } else {
+          print("Fail")
+      }
+      println("")
+
+  }
+}
diff --git a/challenge-252/roger-bell-west/tests.yaml b/challenge-252/roger-bell-west/tests.yaml
new file mode 100644
index 0000000000..44b469c187
--- /dev/null
+++ b/challenge-252/roger-bell-west/tests.yaml
@@ -0,0 +1,34 @@
+---
+ch-1:
+  - function: specialnumbers
+    arguments:
+      - 1
+      - 2
+      - 3
+      - 4
+    result: 21
+  - arguments:
+      - 2
+      - 7
+      - 1
+      - 19
+      - 18
+      - 3
+    result: 63
+ch-2:
+  - function: uniquesumzero
+    arguments: 5
+    result:
+      - 1
+      - 2
+      - 3
+      - 4
+      - -10
+  - arguments: 3
+    result:
+      - 1
+      - 2
+      - -3
+  - arguments: 1
+    result:
+      - 0