From 2ac65e50b1f8c7ee19e2c6e9ce0ffd7d042bb1bd Mon Sep 17 00:00:00 2001
From: Paulo Custodio <pauloscustodio@gmail.com>
Date: Sun, 14 Feb 2021 02:36:14 +0000
Subject: Add Awk solution to challenge 003

---
 challenge-001/paulo-custodio/awk/ch-1.awk  | 10 ++--
 challenge-001/paulo-custodio/test.pl       |  1 +
 challenge-003/paulo-custodio/awk/ch-1.awk  | 65 ++++++++++++++++++++++++
 challenge-003/paulo-custodio/awk/ch-2.awk  | 65 ++++++++++++++++++++++++
 challenge-003/paulo-custodio/t/test-1.yaml | 25 ++++++++++
 challenge-003/paulo-custodio/t/test-2.yaml | 15 ++++++
 challenge-003/paulo-custodio/test.pl       | 80 +-----------------------------
 7 files changed, 177 insertions(+), 84 deletions(-)
 create mode 100644 challenge-003/paulo-custodio/awk/ch-1.awk
 create mode 100644 challenge-003/paulo-custodio/awk/ch-2.awk
 create mode 100644 challenge-003/paulo-custodio/t/test-1.yaml
 create mode 100644 challenge-003/paulo-custodio/t/test-2.yaml

diff --git a/challenge-001/paulo-custodio/awk/ch-1.awk b/challenge-001/paulo-custodio/awk/ch-1.awk
index c954b16d73..da8e38182a 100644
--- a/challenge-001/paulo-custodio/awk/ch-1.awk
+++ b/challenge-001/paulo-custodio/awk/ch-1.awk
@@ -7,8 +7,7 @@
 # ‘Perl Weekly Challenge’. Also print the number of times the character ‘e’
 # is found in the string.
 
-function join(array, start, end, sep,    result, i)
-{
+function join(array, start, end, sep,    result, i) {
     if (sep == "")
        sep = " "
     else if (sep == SUBSEP) # magic value
@@ -19,9 +18,10 @@ function join(array, start, end, sep,    result, i)
     return result
 }
 
-function alen(a, i) {
-    for(i in a);
-    return i
+function alen(a, i, k) {
+    k = 0
+    for(i in a) k++
+    return k
 }
 
 BEGIN {
diff --git a/challenge-001/paulo-custodio/test.pl b/challenge-001/paulo-custodio/test.pl
index 2feb090a1e..41c54fdb5e 100644
--- a/challenge-001/paulo-custodio/test.pl
+++ b/challenge-001/paulo-custodio/test.pl
@@ -62,6 +62,7 @@ for my $lang (grep {-d} sort keys %LANG) {
                         $cmd .= " < in.txt";
                     }
                     if (defined($spec->{output})) {
+                        $spec->{output} =~ s/^\|//mg;       # delete initial bar
                         path("out_exp.txt")->spew($spec->{output});
                         $cmd .= " > out.txt";
                     }
diff --git a/challenge-003/paulo-custodio/awk/ch-1.awk b/challenge-003/paulo-custodio/awk/ch-1.awk
new file mode 100644
index 0000000000..12c7cea74a
--- /dev/null
+++ b/challenge-003/paulo-custodio/awk/ch-1.awk
@@ -0,0 +1,65 @@
+#!/usr/bin/gawk
+
+# Challenge 003
+#
+# Challenge #1
+# Create a script to generate 5-smooth numbers, whose prime divisors are less
+# or equal to 5. They are also called Hamming/Regular/Ugly numbers. For more
+# information, please check this wikipedia.
+
+function min(a, b) {
+    return (a<b) ? a : b;
+}
+
+function min3(a, b, c) {
+    return min(a, min(b, c))
+}
+
+function alen(a,     i, k) {
+    k = 0
+    for(i in a) k++
+    return k
+}
+
+function push(a, v,    n) {
+    n = alen(a)
+    while (n in a) n++
+    a[n] = v
+}
+
+function shift(a,    i, v) {
+    v = a[0]
+    for (i=1; i<alen(a); i++)
+        a[i-1] = a[i]
+    delete a[alen(a)-1]
+    return v
+}
+
+function hamming(    n) {
+    # get the smallest of the multiples
+    n = min3(seq2[0], seq3[0], seq5[0])
+
+    # shift used multiples
+    if (seq2[0] == n) shift(seq2)
+    if (seq3[0] == n) shift(seq3)
+    if (seq5[0] == n) shift(seq5)
+
+    # push next multiple
+    push(seq2, n*2)
+    push(seq3, n*3)
+    push(seq5, n*5)
+
+    return n
+}
+
+BEGIN {
+    # sequences of hamming numbers 2*n, 3*n, 5*n
+    seq2[0] = 1
+    seq3[0] = 1
+    seq5[0] = 1
+
+    n = ARGV[1] ? ARGV[1] : 5
+    for (i=0; i<n; i++)
+        print hamming()
+    exit(0)
+}
diff --git a/challenge-003/paulo-custodio/awk/ch-2.awk b/challenge-003/paulo-custodio/awk/ch-2.awk
new file mode 100644
index 0000000000..ab7703737c
--- /dev/null
+++ b/challenge-003/paulo-custodio/awk/ch-2.awk
@@ -0,0 +1,65 @@
+#!/usr/bin/gawk
+
+# Challenge 003
+#
+# Challenge #2
+# Create a script that generates Pascal Triangle. Accept number of rows from
+# the command line. The Pascal Triangle should have at least 3 rows. For more
+# information about Pascal Triangle, check this wikipedia page.
+
+function alen(a,     i, k) {
+    k = 0
+    for(i in a) k++
+    return k
+}
+
+function push(a, v,    n) {
+    n = alen(a)
+    while (n in a) n++
+    a[n] = v
+}
+
+function spaces(n,    i, output) {
+    output = ""
+    for (i = 0; i < n; i++)
+        output = output " "
+    return output
+}
+
+function join(array, start, end, sep,    result, i) {
+    if (sep == "")
+       sep = " "
+    else if (sep == SUBSEP) # magic value
+       sep = ""
+    result = array[start]
+    for (i = start + 1; i <= end; i++)
+        result = result sep array[i]
+    return result
+}
+
+function draw_pascal(rows,    row, r, i, nrow) {
+    row[0] = 1
+    print spaces(rows-1) join(row, 0, alen(row)-1, " ")
+    for (r = 1; r < rows; r++) {
+        # compute next row
+        for (i in nrow) delete nrow[i]
+        nrow[0] = 1
+        for (i = 0; i < alen(row)-1; i++)
+            push(nrow, row[i]+row[i+1])
+        push(nrow, 1)
+
+        # swap row
+        for (i in nrow)
+            row[i] = nrow[i]
+
+        # print
+        print spaces(rows-r-1) join(row, 0, alen(row)-1, " ")
+    }
+}
+
+BEGIN {
+    n = ARGV[1] ? ARGV[1] : 5
+    draw_pascal(n)
+    exit(0)
+
+}
diff --git a/challenge-003/paulo-custodio/t/test-1.yaml b/challenge-003/paulo-custodio/t/test-1.yaml
new file mode 100644
index 0000000000..1bef1a5dee
--- /dev/null
+++ b/challenge-003/paulo-custodio/t/test-1.yaml
@@ -0,0 +1,25 @@
+- setup:
+  cleanup:
+  args:     20
+  input:
+  output:   |
+            1
+            2
+            3
+            4
+            5
+            6
+            8
+            9
+            10
+            12
+            15
+            16
+            18
+            20
+            24
+            25
+            27
+            30
+            32
+            36
diff --git a/challenge-003/paulo-custodio/t/test-2.yaml b/challenge-003/paulo-custodio/t/test-2.yaml
new file mode 100644
index 0000000000..4f3bc74165
--- /dev/null
+++ b/challenge-003/paulo-custodio/t/test-2.yaml
@@ -0,0 +1,15 @@
+- setup:
+  cleanup:
+  args:     10
+  input:
+  output:   |
+            |         1
+            |        1 1
+            |       1 2 1
+            |      1 3 3 1
+            |     1 4 6 4 1
+            |    1 5 10 10 5 1
+            |   1 6 15 20 15 6 1
+            |  1 7 21 35 35 21 7 1
+            | 1 8 28 56 70 56 28 8 1
+            |1 9 36 84 126 126 84 36 9 1
diff --git a/challenge-003/paulo-custodio/test.pl b/challenge-003/paulo-custodio/test.pl
index 7884fcb0e4..a61c28ebb7 100644
--- a/challenge-003/paulo-custodio/test.pl
+++ b/challenge-003/paulo-custodio/test.pl
@@ -5,82 +5,4 @@ use warnings;
 use Test::More;
 use 5.030;
 
-my $LUA = ($^O eq 'msys') ? "lua.exe" : "lua";
-
-run("gcc     c/ch-1.c   -o     c/ch-1");
-run("g++   cpp/ch-1.cpp -o   cpp/ch-1");
-run("fbc basic/ch-1.bas -o basic/ch-1");
-
-for ([20 => <<END]) {
-1
-2
-3
-4
-5
-6
-8
-9
-10
-12
-15
-16
-18
-20
-24
-25
-27
-30
-32
-36
-END
-    my($in, $out) = @$_;
-
-    is capture(     "$LUA lua/ch-1.lua $in"), $out;
-    is capture(    "perl perl/ch-1.pl  $in"), $out;
-    is capture( "gforth forth/ch-1.fs  $in"), $out;
-    is capture("python python/ch-1.py  $in"), $out;
-    is capture(            "c/ch-1     $in"), $out;
-    is capture(          "cpp/ch-1     $in"), $out;
-    is capture(        "basic/ch-1     $in"), $out;
-}
-
-run("gcc     c/ch-2.c   -o     c/ch-2");
-run("g++   cpp/ch-2.cpp -o   cpp/ch-2");
-run("fbc basic/ch-2.bas -o basic/ch-2");
-
-for ([10 => <<END]) {
-         1
-        1 1
-       1 2 1
-      1 3 3 1
-     1 4 6 4 1
-    1 5 10 10 5 1
-   1 6 15 20 15 6 1
-  1 7 21 35 35 21 7 1
- 1 8 28 56 70 56 28 8 1
-1 9 36 84 126 126 84 36 9 1
-END
-    my($in, $out) = @$_;
-
-    is capture(      "$LUA lua/ch-2.lua    $in "), $out;
-    is capture(     "perl perl/ch-2.pl     $in "), $out;
-    is capture(  "gforth forth/ch-2.fs     $in "), $out;
-    is capture( "python python/ch-2.py     $in "), $out;
-    is capture(             "c/ch-2        $in "), $out;
-    is capture(           "cpp/ch-2        $in "), $out;
-    is capture(         "basic/ch-2        $in "), $out;
-}
-
-done_testing;
-
-sub capture {
-    my($cmd) = @_;
-    my $out = `$cmd`;
-    $out =~ s/[ \t\v\f\r]*\n/\n/g;
-    return $out;
-}
-
-sub run {
-    my($cmd) = @_;
-    ok 0==system($cmd), $cmd;
-}
+require '../../challenge-001/paulo-custodio/test.pl';
-- 
cgit