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Leetcode3:Longest Substring Without Repeating Characters@Python

Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the length is 3. Given "bbbbb", the answer is "b", with the length of 1.…

LeetCode3：Longest Substring Without Repeating Characters

题目: Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb" is "abc", which the length is 3. For "bbbbb" the longest s…

LeetCode----3 Sum

Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: Elements in a triplet (a,b,c) must be in non-descending order. (ie, a ≤ b ≤ c) The solut…

leetcode3:不重复的最长子串长度

package hashmap; import java.util.HashMap; import java.util.Map; public class hashmap { public static void main(String[] args) { String s="dvdf"; if(s==null||s.length()==0){ System.out.println("null"); } int result=1; Map<Character,…

LeetCode3 Longest Substring Without Repeating Characters

题意: Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the length is 3. Given "bbbbb", the answer is "b", with the length of…

leetcode3 Two Sum III – Data structure design

Question: Design and implement a TwoSum class. It should support the following operations: add and find. add(input) – Add the number input to an internal data structure. find(value) – Find if there exists any pair of numbers which sum is equal to the…