【159. Longest Substring with At Most Two Distinct Characters】的更多相关文章

[LeetCode] 159. Longest Substring with At Most Two Distinct Characters 最多有两个不同字符的最长子串

Given a string s , find the length of the longest substring t  that contains at most 2 distinct characters. Example 1: Input: "eceba" Output: 3 Explanation: tis "ece" which its length is 3. Example 2: Input: "ccaabbb" Output:…

【LeetCode】159. Longest Substring with At Most Two Distinct Characters

Difficulty: Hard  More:[目录]LeetCode Java实现 Description Given a string S, find the length of the longest substring T that contains at most two distinct characters.For example,Given S = “eceba”,T is "ece" which its length is 3. Intuition 方法一:假设有一个…

✡ leetcode 159. Longest Substring with At Most Two Distinct Characters 求两个字母组成的最大子串长度 --------- java

Given a string, find the length of the longest substring T that contains at most 2 distinct characters. For example, Given s = "eceba", T is "ece" which its length is 3. 给一个字符串,求这个字符串中,由两个字母组成的,连续的最长子串的长度. 虽然是hard,但是感觉并没有什么难度. 用ch1和pre…

[leetcode]159. Longest Substring with At Most Two Distinct Characters至多包含两种字符的最长子串

Given a string s , find the length of the longest substring t  that contains at most 2 distinct characters. Example 1: Input: "eceba" Output: 3 Explanation: t is "ece" which its length is 3. Example 2: Input: "ccaabbb" Output…

[LC] 159. Longest Substring with At Most Two Distinct Characters

Given a string s , find the length of the longest substring t  that contains at most 2 distinct characters. Example 1: Input: "eceba" Output: 3 Explanation: tis "ece" which its length is 3. Example 2: Input: "ccaabbb" Output:…

159. Longest Substring with At Most Two Distinct Characters

最后更新 二刷 08-Jan-17 回头看了下一刷的,用的map,应该是int[256]的意思,后面没仔细看cuz whatever I was doing at that time.. wasnt good 做法和LC 76非常像,用2 Pointers + 计数来判断是否满足. 这里"有效读取"的判断标准变成了 count[s.charAt(someIndex)]是否从0递增,和每个循环最后它是否递减回0,以此判断dinstinct是否有变化,其实这个比76的有效读取要稍微好理解一…

leetcode[159] Longest Substring with At Most Two Distinct Characters

找到最多含有两个不同字符的子串的最长长度.例如:eoeabc,最长的是eoe为3,其他都为2. 思路: 用p1,p2表示两种字符串的最后一个出现的下标位置.初始p1为0. p2为-1.start初始化为0,表示两种字符串的开头. 只要遍历一次string就可以得到结果了. 首先我们要确定p2的值,那么i要一直到不等于s[p1]的值为止,那么位置就是p2了. 然后继续往后如果来一个字符等于之前两种的其中一种,那么就要更新最后一次出现的下标.根据是谁就更新谁. 如果是新的字符了,那么就要更新star…

[leetcode]340. Longest Substring with At Most K Distinct Characters至多包含K种字符的最长子串

Given a string, find the length of the longest substring T that contains at most k distinct characters. For example, Given s = “eceba” and k = 2, T is "ece" which its length is 3. 题意: 给定字符串,求至多包含K种字符的最长子串 思路: 跟[leetcode]159. Longest Substring wi…

[LeetCode] 340. Longest Substring with At Most K Distinct Characters 最多有K个不同字符的最长子串

Given a string, find the length of the longest substring T that contains at most k distinct characters. For example, Given s = “eceba” and k = 2, T is "ece" which its length is 3. 159. Longest Substring with At Most Two Distinct Characters 的拓展,1…

[LeetCode] Longest Substring with At Most Two Distinct Characters 最多有两个不同字符的最长子串

Given a string S, find the length of the longest substring T that contains at most two distinct characters.For example,Given S = “eceba”,T is “ece” which its length is 3. 这道题给我们一个字符串,让我们求最多有两个不同字符的最长子串.那么我们首先想到的是用哈希表来做,哈希表记录每个字符的出现次数,然后如果哈希表中的映射数量超过两…