why doesn't perl sort the hash key in numeric order ?
- by Haiyuan Zhang
#!/usr/bin/perl
use strict;
use warnings;
my %hash;
foreach ( 1 .. 10 ) {
$hash{$_} = $_;
}
foreach ( sort(keys %hash) ) {
print $_ . ": " . "$hash{$_}" . "\n" ;
}
execute the above code, the result is as below :
1: 1
10: 10
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
Yes, I expect "10: 10" to be the last one taht is printed . So I just need someone to explain why perl give me surprise in this case.
