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20. 有效的括号 #24

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zpc7 opened this issue Aug 7, 2022 · 0 comments
Open

20. 有效的括号 #24

zpc7 opened this issue Aug 7, 2022 · 0 comments
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简单 LeetCode 难度定级

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@zpc7
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zpc7 commented Aug 7, 2022

20. 有效的括号

/**
 * @param {string} s
 * @return {boolean}
 */
var isValid = function (s) {
    const stack = []; // 使用栈存储遇到的字符
    for (let i = 0; i < s.length; i++) {
        const top = stack[stack.length - 1];
        if ((s[i] === ')' && top === '(') || (s[i] === '}' && top === '{') || (s[i] === ']' && top === '[')) {
            stack.pop();
        } else {
            stack.push(s[i]);
        }
    }
    return !stack.length;
};
@zpc7 zpc7 added 简单 LeetCode 难度定级 JS and removed JS labels Aug 7, 2022
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