codedz的博客

Leetcode: Longest Substring Without Repeating CharactersGiven a string s, find the length of the longest substring without repeating characters.Example 1:Input: s = "abcabcbb"Output: 3Explanation: The answer is "abc", with the length of 3.Example 2:

Maximum Subarraydescription:Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.Example:Input: [-2,1,-3,4,-1,2,1...

Welcome to the 30-Day LeetCoding Challenge!由于不平凡的2020疫情影响，全世界大部分人都呆在家里防止感染病毒，于是leecode发起了一个30天代码挑战，从4.1~4.30，下面我将开始挑战！Problem1: Single NumberGiven a non-empty array of integers, every element appea...

Reverse Linked ListReverse a singly linked list.Example:Input: 1->2->3->4->5->NULLOutput: 5->4->3->2->1->NULLFollow up:A linked list can be reversed either iterat...

Integer to Romandescription:Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M.Symbol ValueI 1V 5X 10L 50C...

1.数的全排列（最基础的dfs回溯）/********************************************** *Author* :coderdz *Created Time* : 2019/1/7 23:31:48*********************************************/#include <cstdi...