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【每日一题】算法之最长回文子串

admin
admin
2020-11-03 11:19:22 阅读 87

LeetCode地址

最长回文子串

算法难度

中等

JS代码

/** * @param {string} s * @return {string} */ var longestPalindrome = function(s) { let left = 0 let index = 0 let right = 0 let max = 0 let start = 0 let len = s.length while(index < len) { left = index - 1 right = index while(s[right] === s[index]) { right++ } index = right while(left >= 0 && right < len && s[right] === s[left]) { right++ left-- } if (right - left - 1 > max) { max = right - left - 1 start = left + 1 } } return s.substr(start, max) };

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