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  1. Balanced Brackets
  2. Discussions

Balanced Brackets

  • ahulce
     + 2 comments

    Good job!

    Same concept, but with some performance enhancements:

    function isBalanced(s) {
    // concept: must come out in same order
    const map = {
        '[': ']'
        ,'(': ')'
        ,'{': '}'
    },tracker = []
    for (let i=0;i<s.length;++i) {
        const c = s[i]
        switch (c) {
            case '[':
            case '(':
            case '{':
                tracker.push(map[s[i]])
                break
            case ']':
            case ')':
            case '}':
                if (tracker.pop() != c) {
                    return 'NO'
                }
        }
    }
    return tracker.length == 0 ? 'YES' : 'NO'
}