Longest Substring Without Repeating Characters
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static class Solution {
public static int lengthOfLongestSubstring(String s) { if (s== null || s.length() == 0) { return 0; } /** * * 思路:求不包含重复元素的最大字串,其实核心就是要找到最大子串的起始以及结束位置 * * 1。start记录字段的起始位置 * end记录子串的结束位置 * map的键用来保存字符,值保存该字符的位置 * 1.将字符依次放入map中 * 2.判断该map是否含有该字符 * 是:寻找起始位置 * 否:结束位置为当前位置,index也记住当前位置 * 3.根据start,end找到最大字串 */ Map<Character,Integer> map = new HashMap<>(); char[] chars = s.toCharArray(); int maxLength = 0; int start = 0; int end = 0; for (int i = 0;i< chars.length;i++) { if (map.containsKey(chars[i])) { if (i - map.get(chars[i]) > 1) { if (map.get(chars[i])+1 > start) { start = map.get(chars[i])+1; } }else { start = i; } } end = i; int subLenen = end - start+1; if (subLenen > maxLength) { maxLength = subLenen; } map.put(chars[i],i); } return maxLength; }
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- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
- Longest Substring Without Repeating Characters
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