eXist-FraGGer
/ checkBrackets.js
Created
June 12, 2018 19:54
Method for checking brackets in mathematical string
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| function checkBrackets(text) { | |
| const stackBrackets = []; | |
| const strBrackets = text.replace(/[^()[\]]/g, ''); | |
| for (let i = 0; i < strBrackets.length; i++) { | |
| if (~[ '(', '[' ].indexOf(strBrackets[ i ])) { | |
| stackBrackets.push(strBrackets[ i ]); | |
| } else if ((stackBrackets[ stackBrackets.length - 1 ] === '(' && strBrackets[ i ] === ')') || | |
| (stackBrackets[ stackBrackets.length - 1 ] === '[' && strBrackets[ i ] === ']')) { | |
| stackBrackets.pop(); |