题解 | #牛牛的协作#

import java.util.*;
 
 
public class Solution {
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     *
     * @param s string字符串
     * @return int整型
     */
    public int lengthOfLongestContinuousTasks (String s) {
        // write code here
        Map<Character, Integer> map = new HashMap<>();
        int left = 0;
        int len = 0;
        for (int i = 0; i < s.length(); i++) {
            if (map.containsKey(s.charAt(i))) {
                len = Math.max(len, i - left);
                left = Math.max(left, map.get(s.charAt(i)) + 1);
            }
            map.put(s.charAt(i), i);
        }
        len = Math.max(len, s.length() - left);
        return len;
    }
}