From a9602085f421e3277ba85daeeda08d596df1c903 Mon Sep 17 00:00:00 2001
From: Roger Bell_West <roger@firedrake.org>
Date: Mon, 22 Nov 2021 09:40:37 +0000
Subject: Solutions for challenge #140

---
 challenge-140/roger-bell-west/perl/ch-1.pl       | 37 ++++++++++++++++++++
 challenge-140/roger-bell-west/perl/ch-2.pl       | 19 +++++++++++
 challenge-140/roger-bell-west/postscript/ch-1.ps | 40 ++++++++++++++++++++++
 challenge-140/roger-bell-west/postscript/ch-2.ps | 38 +++++++++++++++++++++
 challenge-140/roger-bell-west/python/ch-1.py     | 35 +++++++++++++++++++
 challenge-140/roger-bell-west/python/ch-2.py     | 21 ++++++++++++
 challenge-140/roger-bell-west/raku/ch-1.p6       | 34 +++++++++++++++++++
 challenge-140/roger-bell-west/raku/ch-2.p6       | 17 ++++++++++
 challenge-140/roger-bell-west/ruby/ch-1.rb       | 42 +++++++++++++++++++++++
 challenge-140/roger-bell-west/ruby/ch-2.rb       | 26 ++++++++++++++
 challenge-140/roger-bell-west/rust/ch-1.rs       | 43 ++++++++++++++++++++++++
 challenge-140/roger-bell-west/rust/ch-2.rs       | 23 +++++++++++++
 12 files changed, 375 insertions(+)
 create mode 100755 challenge-140/roger-bell-west/perl/ch-1.pl
 create mode 100755 challenge-140/roger-bell-west/perl/ch-2.pl
 create mode 100644 challenge-140/roger-bell-west/postscript/ch-1.ps
 create mode 100644 challenge-140/roger-bell-west/postscript/ch-2.ps
 create mode 100755 challenge-140/roger-bell-west/python/ch-1.py
 create mode 100755 challenge-140/roger-bell-west/python/ch-2.py
 create mode 100755 challenge-140/roger-bell-west/raku/ch-1.p6
 create mode 100755 challenge-140/roger-bell-west/raku/ch-2.p6
 create mode 100755 challenge-140/roger-bell-west/ruby/ch-1.rb
 create mode 100755 challenge-140/roger-bell-west/ruby/ch-2.rb
 create mode 100755 challenge-140/roger-bell-west/rust/ch-1.rs
 create mode 100755 challenge-140/roger-bell-west/rust/ch-2.rs

diff --git a/challenge-140/roger-bell-west/perl/ch-1.pl b/challenge-140/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..969b4aeabc
--- /dev/null
+++ b/challenge-140/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,37 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More tests => 3;
+
+is(dcbadd(11,1),100,'example 1');
+is(dcbadd(101,1),110,'example 2');
+is(dcbadd(100,11),111,'example 3');
+
+sub cvradix {
+  my ($n,$r,$tf)=@_;
+  my $o=0;
+  my $nn=$n;
+  my $m=1;
+  my $ra;
+  my $rb;
+  if ($tf==0) { # convert to radix-format
+    $ra=$r;
+    $rb=10;
+  } else { # convert from radix-format
+    $ra=10;
+    $rb=$r;
+  }
+  while ($nn > 0) {
+    $o+=($nn % $ra)*$m;
+    $nn=int($nn/$ra);
+    $m*=$rb;
+  }
+  return $o;
+}
+
+sub dcbadd {
+  my ($a,$b)=@_;
+  return cvradix(cvradix($a,2,1)+cvradix($b,2,1),2,0);
+}
diff --git a/challenge-140/roger-bell-west/perl/ch-2.pl b/challenge-140/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..80c9da7e5f
--- /dev/null
+++ b/challenge-140/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,19 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More tests => 2;
+
+is(mtable(2,3,4),3,'example 1');
+is(mtable(3,3,6),4,'example 2');
+
+sub mtable {
+  my ($i,$j,$k)=@_;
+  my @l;
+  foreach my $a (1..$i) {
+    push @l,map {$a*$_} (1..$j);
+  }
+  @l=sort @l;
+  return $l[$k-1];
+}
diff --git a/challenge-140/roger-bell-west/postscript/ch-1.ps b/challenge-140/roger-bell-west/postscript/ch-1.ps
new file mode 100644
index 0000000000..40f6a8e8e8
--- /dev/null
+++ b/challenge-140/roger-bell-west/postscript/ch-1.ps
@@ -0,0 +1,40 @@
+%!PS
+
+/cvradix {
+    /tf exch def
+    /r exch def
+    /n exch def
+    /o 0 def
+    /m 1 def
+    tf 0 eq {
+        /ra r def
+        /rb 10 def
+    } {
+        /ra 10 def
+        /rb r def
+    } ifelse
+    {
+        /o o n ra mod m mul add def
+        /n n ra div cvi def
+        /m m rb mul def
+        n 0 le {
+            exit
+        } if
+    } loop
+    o
+} bind def
+
+11 2 1 cvradix 3 eq { (Pass) } { (FAIL) } ifelse print ( ) print
+3 2 0 cvradix 11 eq { (Pass) } { (FAIL) } ifelse =
+
+/dcbadd {
+    2 1 cvradix
+    exch
+    2 1 cvradix
+    add
+    2 0 cvradix
+} bind def
+
+11 1 dcbadd 100 eq { (Pass) } { (FAIL) } ifelse print ( ) print
+101 1 dcbadd 110 eq { (Pass) } { (FAIL) } ifelse print ( ) print
+100 11 dcbadd 111 eq { (Pass) } { (FAIL) } ifelse =
diff --git a/challenge-140/roger-bell-west/postscript/ch-2.ps b/challenge-140/roger-bell-west/postscript/ch-2.ps
new file mode 100644
index 0000000000..81716eaa0c
--- /dev/null
+++ b/challenge-140/roger-bell-west/postscript/ch-2.ps
@@ -0,0 +1,38 @@
+%!PS
+
+/bubblesort {
+    mark exch aload pop counttomark /idx
+    exch store
+    {
+        0 1 idx 1 sub {
+            pop 2 copy gt {
+                exch
+            } if idx 1 roll
+        } for
+        idx 1 roll /idx idx 1 sub store
+        idx 0 eq {
+            exit
+        } if
+    } loop
+]
+} store
+
+/mtable {
+    /k exch def
+    /j exch def
+    /i exch def
+    /l i j mul array def
+    /li 0 def
+    1 1 i {
+        /ix exch def
+        1 1 j {
+            ix mul l exch li exch put
+            /li li 1 add def
+        } for
+    } for
+    /l l bubblesort def
+    l k 1 sub get
+} bind def
+
+2 3 4 mtable 3 eq { (Pass) } { (FAIL) } ifelse print ( ) print
+3 3 6 mtable 4 eq { (Pass) } { (FAIL) } ifelse =
diff --git a/challenge-140/roger-bell-west/python/ch-1.py b/challenge-140/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..71868bc49a
--- /dev/null
+++ b/challenge-140/roger-bell-west/python/ch-1.py
@@ -0,0 +1,35 @@
+#! /usr/bin/python3
+
+import unittest
+
+def cvradix(n,r,tf):
+  o=0
+  nn=n
+  m=1
+  if tf==0:
+    ra=r
+    rb=10
+  else:
+    ra=10
+    rb=r
+  while nn>0:
+    o+=(nn % ra) * m
+    nn=int(nn/ra)
+    m*=rb
+  return o
+
+def dcbadd(a,b):
+  return cvradix(cvradix(a,2,1)+cvradix(b,2,1),2,0)
+
+class TestDcbadd(unittest.TestCase):
+
+        def test_ex1(self):
+          self.assertEqual(dcbadd(11,1),100,'example 1')
+
+        def test_ex2(self):
+          self.assertEqual(dcbadd(101,1),110,'example 2')
+
+        def test_ex3(self):
+          self.assertEqual(dcbadd(100,11),111,'example 3')
+
+unittest.main()
diff --git a/challenge-140/roger-bell-west/python/ch-2.py b/challenge-140/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..5066ed6ee9
--- /dev/null
+++ b/challenge-140/roger-bell-west/python/ch-2.py
@@ -0,0 +1,21 @@
+#! /usr/bin/python3
+
+import unittest
+
+def mtable(i,j,k):
+  l=[]
+  for ix in range(1,i+1):
+    for jx in range(1,j+1):
+      l.append(ix*jx)
+  l.sort()
+  return l[k-1]
+
+class TestMtable(unittest.TestCase):
+
+        def test_ex1(self):
+          self.assertEqual(mtable(2,3,4),3,'example 1')
+
+        def test_ex2(self):
+          self.assertEqual(mtable(3,3,6),4,'example 2')
+
+unittest.main()
diff --git a/challenge-140/roger-bell-west/raku/ch-1.p6 b/challenge-140/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..45a03ef0ec
--- /dev/null
+++ b/challenge-140/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,34 @@
+#! /usr/bin/perl6
+
+use Test;
+
+plan 3;
+
+is(dcbadd(11,1),100,'example 1');
+is(dcbadd(101,1),110,'example 2');
+is(dcbadd(100,11),111,'example 3');
+
+sub cvradix($n,$r,$tf) {
+  my $o=0;
+  my $nn=$n;
+  my $m=1;
+  my $ra;
+  my $rb;
+  if ($tf==0) { # convert to radix-format
+    $ra=$r;
+    $rb=10;
+  } else { # convert from radix-format
+    $ra=10;
+    $rb=$r;
+  }
+  while ($nn > 0) {
+    $o+=($nn % $ra)*$m;
+    $nn=floor($nn/$ra);
+    $m*=$rb;
+  }
+  return $o;
+}
+
+sub dcbadd($a,$b) {
+  return cvradix(cvradix($a,2,1)+cvradix($b,2,1),2,0);
+}
diff --git a/challenge-140/roger-bell-west/raku/ch-2.p6 b/challenge-140/roger-bell-west/raku/ch-2.p6
new file mode 100755
index 0000000000..1bc0cfc117
--- /dev/null
+++ b/challenge-140/roger-bell-west/raku/ch-2.p6
@@ -0,0 +1,17 @@
+#! /usr/bin/perl6
+
+use Test;
+
+plan 2;
+
+is(mtable(2,3,4),3,'example 1');
+is(mtable(3,3,6),4,'example 2');
+
+sub mtable($i,$j,$k) {
+  my @l;
+  for (1..$i) -> $a {
+    push @l,map {$a*$_}, (1..$j);
+  }
+  @l=@l».List.flat.sort;
+  return @l[$k-1];
+}
diff --git a/challenge-140/roger-bell-west/ruby/ch-1.rb b/challenge-140/roger-bell-west/ruby/ch-1.rb
new file mode 100755
index 0000000000..a15bbb1b8d
--- /dev/null
+++ b/challenge-140/roger-bell-west/ruby/ch-1.rb
@@ -0,0 +1,42 @@
+#! /usr/bin/ruby
+
+def cvradix(n,r,tf)
+  o=0
+  nn=n
+  m=1
+  if tf==0 then
+    ra=r
+    rb=10
+  else
+    ra=10
+    rb=r
+  end
+  while nn>0
+    nn,x=nn.divmod(ra)
+    o+=x*m
+    m*=rb
+  end
+  return o
+end
+
+def dcbadd(a,b)
+  return cvradix(cvradix(a,2,1)+cvradix(b,2,1),2,0)
+end
+
+require 'test/unit'
+
+class TestDcbadd < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal(100,dcbadd(11,1))
+  end
+
+  def test_ex2
+    assert_equal(110,dcbadd(101,1))
+  end
+
+  def test_ex3
+    assert_equal(111,dcbadd(100,11))
+  end
+
+end
diff --git a/challenge-140/roger-bell-west/ruby/ch-2.rb b/challenge-140/roger-bell-west/ruby/ch-2.rb
new file mode 100755
index 0000000000..b9c2d87283
--- /dev/null
+++ b/challenge-140/roger-bell-west/ruby/ch-2.rb
@@ -0,0 +1,26 @@
+#! /usr/bin/ruby
+
+def mtable(i,j,k)
+  l=[]
+  1.upto(i) do |ix|
+    1.upto(j) do |jx|
+      l.push(ix*jx)
+    end
+  end
+  l.sort!
+  return l[k-1]
+end
+
+require 'test/unit'
+
+class TestMtable < Test::Unit::TestCase
+
+  def test_ex1
+    assert_equal(3,mtable(2,3,4))
+  end
+
+  def test_ex2
+    assert_equal(4,mtable(3,3,6))
+  end
+
+end
diff --git a/challenge-140/roger-bell-west/rust/ch-1.rs b/challenge-140/roger-bell-west/rust/ch-1.rs
new file mode 100755
index 0000000000..9ccdfc31e4
--- /dev/null
+++ b/challenge-140/roger-bell-west/rust/ch-1.rs
@@ -0,0 +1,43 @@
+#! /bin/sh
+//usr/bin/env rustc --test $0 -o ${0}x && ./${0}x; rm -f ${0}x ; exit
+
+#[test]
+fn test_ex1() {
+    assert_eq!(dcbadd(11,1),100);
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(dcbadd(101,1),110);
+}
+
+#[test]
+fn test_ex3() {
+    assert_eq!(dcbadd(100,11),111);
+
+}
+
+fn cvradix(n: u32,r: u32,tf: u32) -> u32 {
+    let mut o=0;
+    let mut nn=n;
+    let mut m=1;
+    let ra;
+    let rb;
+    if tf==0 {
+        ra=r;
+        rb=10;
+    } else {
+        ra=10;
+        rb=r;
+    }
+    while nn>0 {
+        o+=(nn % ra) * m;
+        nn /= ra;
+        m *= rb;
+    }
+    return o;
+}
+
+fn dcbadd(a: u32,b:u32) -> u32 {
+    return cvradix(cvradix(a,2,1)+cvradix(b,2,1),2,0);
+}
diff --git a/challenge-140/roger-bell-west/rust/ch-2.rs b/challenge-140/roger-bell-west/rust/ch-2.rs
new file mode 100755
index 0000000000..5179d8f341
--- /dev/null
+++ b/challenge-140/roger-bell-west/rust/ch-2.rs
@@ -0,0 +1,23 @@
+#! /bin/sh
+//usr/bin/env rustc --test $0 -o ${0}x && ./${0}x; rm -f ${0}x ; exit
+
+#[test]
+fn test_ex1() {
+    assert_eq!(mtable(2,3,4),3);
+}
+
+#[test]
+fn test_ex2() {
+    assert_eq!(mtable(3,3,6),4);
+}
+
+fn mtable(i: u32,j: u32,k: usize) -> u32 {
+    let mut l=vec![];
+    for ix in 1..=i {
+        for jx in 1..=j {
+            l.push(ix*jx);
+        }
+    }
+    l.sort();
+    return l[k-1];
+}
-- 
cgit