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#!/usr/bin/env perl
#
# You are given an array of unique numbers.
# Write a script to find out all missing numbers in the range 0..$n where $n is the array size.
#
use strict;
use warnings;
#~ my @num_array = (2, 1, 4, 3);
my @num_array = (0, 1, 2, 3, 4);
my $array_len = scalar(@num_array);
my %array_hash = map { $_ => 1 } @num_array;
print("Array length is: $array_len \n");
foreach ( 0..$array_len ){
if (! exists($array_hash{$_})){
print("Array is missing $_!\n");
last;
}
}
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