LeetCode 算法题【Easy】：20. Valid Parentheses

习题集

链接：https://leetcode.com/problems/valid-parentheses/

Question

Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.

An input string is valid if:

  1. Open brackets must be closed by the same type of brackets.
  2. Open brackets must be closed in the correct order.
  3. Every close bracket has a corresponding open bracket of the same type.

Example 1:

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Input: s = "()"
Output: true

Example 2:

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Input: s = "()[]{}"
Output: true

Example 3:

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Input: s = "(]"
Output: false

My Answer

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var isValid = function(s) {
    const strCount = s.length
    if (strCount % 2 === 1) return false
    let tempStr = s
    while(tempStr.includes('[]') || tempStr.includes('{}') || tempStr.includes('()')) {
      tempStr = tempStr.replace('[]', '').replace('{}', '').replace('()', '')
    }
    return tempStr === ''
};

My Answer’s Performance

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