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#! perl -slw use strict; sub buk { my $string = shift; my @pals; while( $string =~ m[(.) (?=( (?:\1) | (?:.\1) ) ) ]gx ){ my( $left, $right ) = ( $-[ 0 ], $+[ -1 ] ); while( $left and $right < length( $string ) and substr( $string, $left, 1 ) eq substr( $string, $right, 1 +) ) { $left--; $right++ ; } my $pal = substr( $string, $left, $right - $left ); if( !@pals or length( $pals[ -1 ] ) < length( $pal ) ) { @pals = $pal; } else { push @pals, $pal unless @pals; } } return wantarray ? $pals[ 0 ] : @pals; } print $ARGV[ 0 ]; print ' ' x index( $ARGV[ 0 ], $_ ), $_ for buk $ARGV[ 0 ]; __END__ P:\test>382567 1111111121111111111112111111111111111111111112111111111 +111211111 1111111121111111111112111111111111111111111112111111111111211111 11111121111111111112111111111111111111111112111111111111211111 P:\test>382567 1111111121111111111112111111111111111111111112111111111 +1121111 11111111211111111111121111111111111111111111121111111111121111 111111111111211111111111111111111111211111111111


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In reply to Re: Finding longest palindrome from a string by BrowserUk
in thread Finding longest palindrome from a string by BUU

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