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+#!/usr/bin/env perl
+# vim:set ts=4 sw=4 sts=4 et ai wm=0 nu:
+#=============================================================================
+# Perl Weekly Challenge Week 196 Task 2 Range List
+#=============================================================================
+# Copyright (c) 2022, Bob Lied
+#=============================================================================
+# You are given a sorted unique integer array, @array.
+# Write a script to find all possible Number Range i.e [x, y] represent range
+# all integers from x and y (both inclusive).
+# Each subsequence of two or more contiguous integers
+# Example 1 Input: @array = (1,3,4,5,7)
+#          Output: [3,5]
+# Example 2 Input: @array = (1,2,3,6,7,9)
+#          Output: [1,3], [6,7]
+# Example 3 Input: @array = (0,1,2,4,5,6,8,9)
+#          Output: [0,2], [4,6], [8,9]
+# 
+#=============================================================================
+
+use v5.36;
+
+
+use Getopt::Long;
+my $Verbose = 0;
+my $DoTest  = 0;
+
+GetOptions("test" => \$DoTest, "verbose" => \$Verbose);
+exit(!runTest()) if $DoTest;
+
+for my $arg ( @ARGV )
+{
+    $arg =~ tr/[(),/ /;
+    my @array = split(' ', $arg);
+
+    my $result = findRun(\@array);
+
+    say join(', ', map { "[@$_]" } $result->@* );
+}
+
+sub findRun($list)
+{
+    my $len = scalar(@$list);
+    return [[]] if $len < 2;
+
+    my @run = ();
+    my ($i, $j) = (0,1);
+    while ( $i < $len )
+    {
+        $j = $i + 1;
+        while ( $j < $len && $list->[$j] == ($list->[$j-1]+1) )
+        {
+            $j++;
+        }
+        if ( $j - $i > 1 )
+        {
+            push @run, [ $list->[$i], $list->[$j-1] ];
+        }
+        $i = $j;
+    }
+    return \@run;
+}
+
+sub runTest
+{
+    use Test2::V0;
+
+    is( findRun( [ 1,3,4,5,7   ] ), [ [3,5] ], "Example 1");
+    is( findRun( [ 1,2,3,6,7,9 ] ), [ [1,3], [6,7] ], "Example 2");
+    is( findRun( [ 0,1,2,4,5,6,8,9 ] ), [ [0,2], [4,6], [8,9] ], "Example 3");
+
+    done_testing;
+}
+