lengthOflongestSubstring
試?yán)?#xff1a;
輸入: "abcabcbb"
輸出: 3
解釋: 因?yàn)闊o重復(fù)字符的最長(zhǎng)子串是 "abc"，所以其長(zhǎng)度為 3。

/**** @param {string} s* 無重復(fù)字符的最長(zhǎng)子串*/ function lengthOfLongestSubstring(s) {if (typeof s !== 'string' || s.length === 0) return 0;const len = s.length;let maxSubstring = s[0];let substr = maxSubstring;const maxLengthString = (a, b) => {let result = a;if (a.length < b.length) {result = b;return result;}return result;};for (let i = 1; i <= len; i += 1) {if (substr.indexOf(s[i]) === -1) {substr += s.substring(i, i + 1);maxSubstring = maxLengthString(maxSubstring, substr);} else {substr = substr.substring((substr.indexOf(s[i]) + 1));substr += s[i];maxSubstring = maxLengthString(maxSubstring, substr);}}// console.log(maxSubstring);return maxSubstring.length; }

寫的測(cè)試

/**** @param {number} count* @param {number} length** 生成 指定個(gè)數(shù)，指定長(zhǎng)度隨機(jī) 數(shù)字 字符串?dāng)?shù)組*/ function randomString(count, length) {const result = [];for (let i = 0; i < count; i += 1) {let str = '';let len = length;while (len > 0) {str += `${Math.floor(Math.random() * 9 + 1)}`;len -= 1;}result.push(str);}return result; }

轉(zhuǎn)載于:https://www.cnblogs.com/rosendolu/p/10893430.html

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