摘要：
Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't mat... 阅读全文
摘要：
Given an array withnobjects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, wh... 阅读全文
摘要：
Given a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2->1->4->3.Your algor... 阅读全文
摘要：
Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999. 1 class Solution { 2 public: 3 int roma... 阅读全文
摘要：
Given a sorted linked list, delete all duplicates such that each element appear onlyonce.For example,Given1->1->2, return1->2.Given1->1->2->3->3, retu... 阅读全文
摘要：
Given an array of integers, every element appearsthreetimes except for one. Find that single one. 1 int singleNumber(int* nums, int numsSize) 2 { 3 ... 阅读全文
摘要：
Given an array of sizen, find the majority element. The majority element is the element that appears more than⌊ n/2 ⌋times.You may assume that the arr... 阅读全文
摘要：
Invert a binary tree. 4 / \ 2 7 / \ / \1 3 6 9to 4 / \ 7 2 / \ / \9 6 3 1 1 /** 2 * Definition for a binary tre... 阅读全文
摘要：
Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the arr... 阅读全文
摘要：
Given a linked list, determine if it has a cycle in it. 1 /** 2 * Definition for singly-linked list. 3 * struct ListNode { 4 * int val; 5 * ... 阅读全文
摘要：
Write a function that takes an unsigned integer and returns the number of ’1' bits it hasFor example, the 32-bit integer ’11' has binary representatio... 阅读全文
摘要：
Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.Supposed the linked list is1 -> 2 -> 3 -> ... 阅读全文