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<?php function isCorrect($string) { $len = strlen($string); $stack = array(); for( $i = 0; $i < $len; ++$i) { if ( $string[$i] == '(' || $string[$i] == '{' || $string[$i] == '[') array_push($stack, $string[$i]); elseif( $string[$i] == ')' || $string[$i] == '}' || $string[$i] == ']') { if ( empty($stack) === false ) array_pop($stack); else return false; } } return empty($stack); } assert(isCorrect('') === true); assert(isCorrect('()') === true); assert(isCorrect('{()}') === true); assert(isCorrect('{()}{}') === true); assert(isCorrect('(())') === true); assert(isCorrect('{({({({()})})})}') === true); assert(isCorrect('{(})') === false);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught AssertionError: assert(isCorrect('{(})') === false) in /in/ZOU55:24 Stack trace: #0 /in/ZOU55(24): assert(false, 'assert(isCorrec...') #1 {main} thrown in /in/ZOU55 on line 24
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught AssertionError: assert(isCorrect('{(})') === false) in /in/ZOU55:24 Stack trace: #0 /in/ZOU55(24): assert(false, 'assert(isCorrec...') #1 {main} thrown in /in/ZOU55 on line 24
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: assert(): assert(isCorrect('{(})') === false) failed in /in/ZOU55 on line 24
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Warning: assert(): Assertion failed in /in/ZOU55 on line 24
Output for 4.3.0 - 4.3.1
Warning: assert() [http://www.php.net/function.assert]: Assertion failed in /in/ZOU55 on line 24
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198 ms | 401 KiB | 313 Q