Given a sorted linked list, delete all duplicates such that each element appear only once. Example…

题目描述 Given a collection of integers that might contain duplicates, nums, return all possible subsets. Note: El…

  Given a string s, partition s such that every substring of the partition is a palindrome…

  We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You …

Pow(x, n) Implement pow(x, n) 递归法 复杂度 时间 O(logN) 空间 O(logN) 思路 通过一点点数学推导我们可以知道，如果n是偶数$$ x^nx^n = x^{2n}$$如果n是奇…

  Find the contiguous subarray within an array (containing at least one number) which has the largest sum…

题目： Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced B…

  Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is…

  You need to construct a binary tree from a string consisting of parenthesis and integers. The whole inp…

  Given a non-empty 2D array grid of 0’s and 1’s, an island is a group of…

题目： Given a list, rotate the list to the right by k places, where k is non-negative. For e…

1. 题目 Given an unsorted integer array, find the first missing positive integer. For example,Given [1,2,0] retu…