My-Codewars-Solutions/Challenge1.js at main · ub-victor/My-Codewars-Solutions · GitHub

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function validBraces(braces) {

    const stack = [];


    const openBraces = '([{';
    const closeBraces = ')]}';


    const matchingBraces = {
        ')': '(',
        ']': '[',
        '}': '{'
    };


    for (let char of braces) {

        if (openBraces.includes(char)) {

            stack.push(char);
        }

        else if (closeBraces.includes(char)) {

            if (stack.length === 0 || stack.pop() !== matchingBraces[char]) {

                return false;
            }
        }
    }


    return stack.length === 0;
}


console.log(validBraces("(){}[]"));   // => True, all braces match correctly
console.log(validBraces("([{}])"));   // => True, all braces match correctly
console.log(validBraces("(}"));       // => False, mismatched brace
console.log(validBraces("[(])"));     // => False, order of braces is incorrect
console.log(validBraces("[({})](]")); // => False, unmatched closing brace