Jojo

原题链接题目：Given an array of integers, return indices of the two numbers such that they add up to a specific target.You may assume that each input would have exactly one solution, and you may

原题链接题目：You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbe

题目：50. Pow(x, n)Implement pow(x, n).题目描述：实现x的n次方一开始用蛮力法计算，提交代码以后系统判断计算超时，所以采用分治的思想，先计算x的n/2次方，再将结果求平方即可，调试过程中主要问题就是精度问题，当x为分数、且n较大时，结果可能为0，在求解问题中可能出现0做分分母的情况，如果改为乘法 则可以解决这个问题（以下代

题目：原题链接：Remove Duplicates from Sorted ArrayGiven a sorted array, remove the duplicates in place such that each element appear only once and return the new length.Do not allocate extra space

题目：Plus OneGiven a non-negative integer represented as a non-empty array of digits, plus one to the integer.You may assume the integer do not contain any leading zero, except the number

题目：Remove ElementGiven an array and a value, remove all instances of that value in place and return the new length.Do not allocate extra space for another array, you must do this in place wi