#### 原创 LeetCode：Edit Distance

Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2.(each operation is

#### 原创 LeetCode:Is Subsequence

Given a string s and a string t, check if s is subsequence of t. You may assume that there is only lower case English

#### 原创 LeetCode: Move Zeroes

Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the no

#### 原创 LeetCode：Single Number

Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm s

#### 原创 LeetCode：Remove Duplicates from Sorted List II

Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the origin

#### 原创 LeetCode: Remove Duplicates from Sorted Array

Given a sorted array, remove the duplicates in place such that each element appear only once and return the new

#### 原创 LeetCode: Top K Frequent Elements

Given a non-empty array of integers, return the k most frequent elements. For example, Given [1,1,1,2,2,3] and k = 2,

#### 原创 LeetCode：Course Schedule

There are a total of n courses you have to take, labeled from 0 to n - 1. Some courses may have prerequisites, for e

#### 原创 LeetCode：Reorder List

Given a singly linked list L : L0 -> L1 -> ...Ln-1 -> Ln, reorder it to: L0 -> Ln ->L1 ->Ln-1 -> L2 -> Ln-2 ->.... You

#### 原创 LeetCode：Rotate Image

You are given an n*n 2D matrix representing an image. Rotate the image by 90 degrees(clockwise). Follow up: Could you d

#### 原创 LeetCode: Subtree of Another Tree

Given two non-empty binary trees s and t, check whether tree t has exactly the same structure and node values with a