Merge pull request #10221 from Firedrake/rogerbw-challenge-272

RogerBW solutions for challenge no. 272

23 files changed, 648 insertions, 0 deletions

diff --git a/challenge-272/roger-bell-west/crystal/ch-1.cr b/challenge-272/roger-bell-west/crystal/ch-1.cr
new file mode 100755
index 0000000000..032e4213b7
--- /dev/null
+++ b/challenge-272/roger-bell-west/crystal/ch-1.cr
@@ -0,0 +1,15 @@
+#! /usr/bin/crystal
+
+def defrangip(a)
+  return a.gsub(".", "[.]")
+end
+
+require "spec"
+describe "defrangip" do
+  it "test_ex1" do
+    defrangip("1.1.1.1").should eq "1[.]1[.]1[.]1"
+  end
+  it "test_ex2" do
+    defrangip("255.101.1.0").should eq "255[.]101[.]1[.]0"
+  end
+end
diff --git a/challenge-272/roger-bell-west/crystal/ch-2.cr b/challenge-272/roger-bell-west/crystal/ch-2.cr
new file mode 100755
index 0000000000..bcea3f7fe1
--- /dev/null
+++ b/challenge-272/roger-bell-west/crystal/ch-2.cr
@@ -0,0 +1,22 @@
+#! /usr/bin/crystal
+
+def stringscore(a)
+  out = 0
+  a.chars.each_cons(2) do |c|
+    out += (c[0].ord() - c[1].ord()).abs
+  end
+  out
+end
+
+require "spec"
+describe "stringscore" do
+  it "test_ex1" do
+    stringscore("hello").should eq 13
+  end
+  it "test_ex2" do
+    stringscore("perl").should eq 30
+  end
+  it "test_ex3" do
+    stringscore("raku").should eq 37
+  end
+end
diff --git a/challenge-272/roger-bell-west/javascript/ch-1.js b/challenge-272/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..27d2fa1a36
--- /dev/null
+++ b/challenge-272/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,20 @@
+#! /usr/bin/node
+
+"use strict"
+
+function defrangip(a) {
+    return a.replace(/\./g, "[.]");
+}
+
+if (defrangip('1.1.1.1') == '1[.]1[.]1[.]1') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (defrangip('255.101.1.0') == '255[.]101[.]1[.]0') {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-272/roger-bell-west/javascript/ch-2.js b/challenge-272/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..96364dc7c8
--- /dev/null
+++ b/challenge-272/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,39 @@
+#! /usr/bin/node
+
+"use strict"
+
+// by VLAZ
+// https://stackoverflow.com/a/59322890
+function toWindows(inputArray, size) {
+  return Array.from(
+    {length: inputArray.length - (size - 1)}, //get the appropriate length
+    (_, index) => inputArray.slice(index, index+size) //create the windows
+  )
+}
+
+function stringscore(a) {
+    let out = 0;
+    for (let t = 0; t < a.length - 1; t++) {
+        out += Math.abs(a.charCodeAt(t) - a.charCodeAt(t + 1));
+    }
+    return out;
+}
+
+if (stringscore('hello') == 13) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (stringscore('perl') == 30) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (stringscore('raku') == 37) {
+  process.stdout.write("Pass");
+} else {
+  process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-272/roger-bell-west/kotlin/ch-1.kt b/challenge-272/roger-bell-west/kotlin/ch-1.kt
new file mode 100644
index 0000000000..495b14c77b
--- /dev/null
+++ b/challenge-272/roger-bell-west/kotlin/ch-1.kt
@@ -0,0 +1,20 @@
+fun defrangip(a: String): String {
+    return a.replace(".", "[.]")
+}
+
+fun main() {
+
+    if (defrangip("1.1.1.1") == "1[.]1[.]1[.]1") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (defrangip("255.101.1.0") == "255[.]101[.]1[.]0") {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-272/roger-bell-west/kotlin/ch-2.kt b/challenge-272/roger-bell-west/kotlin/ch-2.kt
new file mode 100644
index 0000000000..ee575717b9
--- /dev/null
+++ b/challenge-272/roger-bell-west/kotlin/ch-2.kt
@@ -0,0 +1,30 @@
+fun stringscore(a: String): Int {
+    var out = 0
+    for (i in a.toList().windowed(size = 2)) {
+        out += Math.abs(i[0].code - i[1].code)
+    }
+    return out
+}
+
+fun main() {
+
+    if (stringscore("hello") == 13) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (stringscore("perl") == 30) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    print(" ")
+    if (stringscore("raku") == 37) {
+        print("Pass")
+    } else {
+        print("Fail")
+    }
+    println("")
+
+}
diff --git a/challenge-272/roger-bell-west/lua/ch-1.lua b/challenge-272/roger-bell-west/lua/ch-1.lua
new file mode 100755
index 0000000000..f8b4f261b7
--- /dev/null
+++ b/challenge-272/roger-bell-west/lua/ch-1.lua
@@ -0,0 +1,20 @@
+#! /usr/bin/lua
+
+function defrangip(a)
+   return string.gsub(a, "[.]", "[.]")
+   end
+
+if defrangip("1.1.1.1") == "1[.]1[.]1[.]1" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if defrangip("255.101.1.0") == "255[.]101[.]1[.]0" then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-272/roger-bell-west/lua/ch-2.lua b/challenge-272/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..7bf1100382
--- /dev/null
+++ b/challenge-272/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,43 @@
+#! /usr/bin/lua
+
+function split(t)
+   local cl = {}
+   string.gsub(t,
+               "(.)",
+               function(c)
+                  table.insert(cl, c)
+               end
+   )
+   return cl
+end
+
+function stringscore(a)
+   local out = 0
+   local c = split(a)
+   for n = 1, #c - 1 do
+      out = out + math.abs(string.byte(c[n]) - string.byte(c[n + 1]))
+   end
+   return out
+end
+
+if stringscore("hello") == 13 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if stringscore("perl") == 30 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if stringscore("raku") == 37 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
diff --git a/challenge-272/roger-bell-west/perl/ch-1.pl b/challenge-272/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..bd91e55ec6
--- /dev/null
+++ b/challenge-272/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,15 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 2;
+
+is(defrangip('1.1.1.1'), '1[.]1[.]1[.]1', 'example 1');
+is(defrangip('255.101.1.0'), '255[.]101[.]1[.]0', 'example 2');
+
+sub defrangip($a) {
+  (my $b = $a) =~ s/\./[.]/g;
+  return $b;
+}
diff --git a/challenge-272/roger-bell-west/perl/ch-2.pl b/challenge-272/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..f14041e844
--- /dev/null
+++ b/challenge-272/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,20 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use experimental 'signatures';
+
+use Test::More tests => 3;
+
+is(stringscore('hello'), 13, 'example 1');
+is(stringscore('perl'), 30, 'example 2');
+is(stringscore('raku'), 37, 'example 3');
+
+sub stringscore($a) {
+  my $out = 0;
+  my @c = split '',$a;
+  foreach my $i (0 .. $#c - 1) {
+    $out += abs(ord($c[$i]) - ord($c[$i+1]));
+  }
+  return $out;
+}
diff --git a/challenge-272/roger-bell-west/postscript/ch-1.ps b/challenge-272/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..71a4deae7c
--- /dev/null
+++ b/challenge-272/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,70 @@
+%!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.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
+
+/defrangip {
+    [ exch
+      s2a
+      {
+          dup 46 eq {
+              91 exch
+              93
+          } if
+      } forall
+    ]
+    a2s
+} bind def
+
+(defrangip) test.start
+(1.1.1.1) defrangip (1[.]1[.]1[.]1) eq test
+(255.101.1.0) defrangip (255[.]101[.]1[.]0) eq test
+test.end
diff --git a/challenge-272/roger-bell-west/postscript/ch-2.ps b/challenge-272/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..c1de213b51
--- /dev/null
+++ b/challenge-272/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,75 @@
+%!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.start {
+    print (:) print
+    /test.pass 0 def
+    /test.count 0 def
+} bind def
+
+/rotor {
+    5 dict begin
+    /delta exch def
+    /size exch def
+    dup length /len exch def
+    /ar exch def
+    /ix 0 def
+    [
+        {
+            ix size add len gt {
+                exit
+            } if
+            ar ix size getinterval
+            /ix ix size delta add add def
+        } loop
+    ]
+    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
+
+/s2a {
+    [ exch { } forall ]
+} bind def
+
+
+% end included library code
+
+/stringscore {
+    0 exch
+    s2a
+    2 -1 rotor
+    {
+        aload pop sub abs add
+    } forall
+} bind def
+
+(stringscore) test.start
+(hello) stringscore 13 eq test
+(perl) stringscore 30 eq test
+(raku) stringscore 37 eq test
+test.end
diff --git a/challenge-272/roger-bell-west/python/ch-1.py b/challenge-272/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..2fbe357488
--- /dev/null
+++ b/challenge-272/roger-bell-west/python/ch-1.py
@@ -0,0 +1,16 @@
+#! /usr/bin/python3
+
+def defrangip(a):
+  return a.replace(".", "[.]")
+
+import unittest
+
+class TestDefrangip(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(defrangip("1.1.1.1"), "1[.]1[.]1[.]1", 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(defrangip("255.101.1.0"), "255[.]101[.]1[.]0", 'example 2')
+
+unittest.main()
diff --git a/challenge-272/roger-bell-west/python/ch-2.py b/challenge-272/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..4332977373
--- /dev/null
+++ b/challenge-272/roger-bell-west/python/ch-2.py
@@ -0,0 +1,36 @@
+#! /usr/bin/python3
+
+import collections
+from itertools import islice
+
+# https://docs.python.org/3/library/itertools.html
+def sliding_window(iterable, n):
+    # sliding_window('ABCDEFG', 4) --> ABCD BCDE CDEF DEFG
+    it = iter(iterable)
+    window = collections.deque(islice(it, n), maxlen=n)
+    if len(window) == n:
+        yield tuple(window)
+    for x in it:
+        window.append(x)
+        yield tuple(window)
+
+def stringscore(a):
+  out = 0
+  for i in sliding_window(a, 2):
+    out += abs(ord(i[0]) - ord(i[1]))
+  return out
+
+import unittest
+
+class TestStringscore(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(stringscore("hello"), 13, 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(stringscore("perl"), 30, 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(stringscore("raku"), 37, 'example 3')
+
+unittest.main()
diff --git a/challenge-272/roger-bell-west/raku/ch-1.p6 b/challenge-272/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..fe923d38d0
--- /dev/null
+++ b/challenge-272/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,13 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 2;
+
+is(defrangip('1.1.1.1'), '1[.]1[.]1[.]1', 'example 1');
+is(defrangip('255.101.1.0'), '255[.]101[.]1[.]0', 'example 2');
+
+sub defrangip($a) {
+    (my $b = $a) ~~ s:g/\./[.]/;
+    return $b;
+}
diff --git a/challenge-272/roger-bell-west/raku/ch-2.p6 b/challenge-272/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..7f67141e39
--- /dev/null
+++ b/challenge-272/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,18 @@
+#! /usr/bin/raku
+
+use Test;
+
+plan 3;
+
+is(stringscore('hello'), 13, 'example 1');
+is(stringscore('perl'), 30, 'example 2');
+is(stringscore('raku'), 37, 'example 3');
+
+sub stringscore($a) {
+    my $out = 0;
+    my @c = $a.comb;
+    for @c.rotor(2 => -1) -> @i {
+        $out += abs(ord(@i[0]) - ord(@i[1]));
+    }
+    return $out;
+}
diff --git a/challenge-272/roger-bell-west/ruby/ch-1.rb b/challenge-272/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..82152f9fd3
--- /dev/null
+++ b/challenge-272/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,19 @@
+#! /usr/bin/ruby
+
+def defrangip(a)
+  return a.gsub(".", "[.]")
+end
+
+require 'test/unit'
+
+class TestDefrangip < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal('1[.]1[.]1[.]1', defrangip('1.1.1.1'))
+  end
+
+  def test_ex2
+    assert_equal('255[.]101[.]1[.]0', defrangip('255.101.1.0'))
+  end
+
+end
diff --git a/challenge-272/roger-bell-west/ruby/ch-2.rb b/challenge-272/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..f198380624
--- /dev/null
+++ b/challenge-272/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,27 @@
+#! /usr/bin/ruby
+
+def stringscore(a)
+  out = 0
+  a.chars.each_cons(2) do |c|
+    out += (c[0].ord() - c[1].ord()).abs
+  end
+  out
+end
+
+require 'test/unit'
+
+class TestStringscore < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal(13, stringscore('hello'))
+  end
+
+  def test_ex2
+    assert_equal(30, stringscore('perl'))
+  end
+
+  def test_ex3
+    assert_equal(37, stringscore('raku'))
+  end
+
+end
diff --git a/challenge-272/roger-bell-west/rust/ch-1.rs b/challenge-272/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..ef13992b11
--- /dev/null
+++ b/challenge-272/roger-bell-west/rust/ch-1.rs
@@ -0,0 +1,24 @@
+#! /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!(defrangip("1.1.1.1"), "1[.]1[.]1[.]1");
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(defrangip("255.101.1.0"), "255[.]101[.]1[.]0");
+}
+
+fn defrangip(a: &str) -> String {
+    let mut out = String::new();
+    for c in a.chars() {
+        if c == '.' {
+            out.push_str("[.]");
+        } else {
+            out.push(c);
+        }
+    }
+    out
+}
diff --git a/challenge-272/roger-bell-west/rust/ch-2.rs b/challenge-272/roger-bell-west/rust/ch-2.rs
new file mode 100755
index 0000000000..c95b015b88
--- /dev/null
+++ b/challenge-272/roger-bell-west/rust/ch-2.rs
@@ -0,0 +1,25 @@
+#! /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!(stringscore("hello"), 13);
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(stringscore("perl"), 30);
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(stringscore("raku"), 37);
+}
+
+fn stringscore(a: &str) -> u32 {
+    let mut out = 0;
+    for i in a.chars().collect::<Vec<char>>().windows(2) {
+        out += ((i[0] as i32) - (i[1] as i32)).abs();
+    }
+    out as u32
+}
diff --git a/challenge-272/roger-bell-west/scala/ch-1.scala b/challenge-272/roger-bell-west/scala/ch-1.scala
new file mode 100644
index 0000000000..9cfa5dcc61
--- /dev/null
+++ b/challenge-272/roger-bell-west/scala/ch-1.scala
@@ -0,0 +1,20 @@
+object Defrangip {
+  def defrangip(a: String): String = {
+    a.replaceAll("\\.", "[.]")
+  }
+  def main(args: Array[String]) {
+    if (defrangip("1.1.1.1") == "1[.]1[.]1[.]1") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (defrangip("255.101.1.0") == "255[.]101[.]1[.]0") {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    println("")
+
+  }
+}
diff --git a/challenge-272/roger-bell-west/scala/ch-2.scala b/challenge-272/roger-bell-west/scala/ch-2.scala
new file mode 100644
index 0000000000..d7bebf840d
--- /dev/null
+++ b/challenge-272/roger-bell-west/scala/ch-2.scala
@@ -0,0 +1,32 @@
+
+object Stringscore {
+  def stringscore(a: String): Int = {
+    var out = 0
+    val c = a.toList
+    for (i <- c.sliding(2)) {
+      out += (i(0).toInt - i(1).toInt).abs
+    }
+    out
+  }
+  def main(args: Array[String]) {
+    if (stringscore("hello") == 13) {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (stringscore("perl") == 30) {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    print(" ")
+    if (stringscore("raku") == 37) {
+      print("Pass")
+    } else {
+      print("Fail")
+    }
+    println("")
+
+  }
+}
diff --git a/challenge-272/roger-bell-west/tests.json b/challenge-272/roger-bell-west/tests.json
new file mode 100644
index 0000000000..2eb8bad37e
--- /dev/null
+++ b/challenge-272/roger-bell-west/tests.json
@@ -0,0 +1,29 @@
+{
+    "ch-1" : [
+        {
+            "function" : "defrangip",
+            "arguments" : "1.1.1.1",
+            "result" : "1[.]1[.]1[.]1"
+        },
+        {
+            "function" : "defrangip",
+            "arguments" : "255.101.1.0",
+            "result" : "255[.]101[.]1[.]0"
+        }
+    ],
+    "ch-2" : [
+        {
+            "function" : "stringscore",
+            "arguments" : "hello",
+            "result" : 13
+        },
+        {
+            "arguments" : "perl",
+            "result" : 30
+        },
+        {
+            "arguments" : "raku",
+            "result" : 37
+        }
+    ]
+}