<?php
function isCorrect($string) {
$len = strlen($string);
$stack = array();
for( $i = 0; $i < $len; ++$i)
{
if ( $string[$i] == '(' ) array_push($stack, $string[$i]);
elseif( $string[$i] == ')' )
{
if ( empty($stack) === false ) array_pop($stack);
else return false;
}
}
return empty($stack);
}
$string = '()((()))';
var_dump(isCorrect($string));
//var_dump(isCorrect($string));
//var_dump(strlen($string) % 2);
//assert(isCorrect('') === true);
//assert(isCorrect('()') === true);
//assert(isCorrect('{()}') === true);
//assert(isCorrect('{()}{}') === true);
//assert(isCorrect('(())') === true);
//assert(isCorrect('{({({({()})})})}') === true);
//assert(isCorrect('{(})') === false);
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- bool(true)
- Output for 5.1.0
- Fatal error: fatal flex scanner internal error--end of buffer missed in /in/83isr on line 28
Process exited with code 255.
preferences:
304.94 ms | 401 KiB | 449 Q