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对于a,b,取余和取模运算分为两步： （1）求整数商： （2）计算模或者余数： 取余和取模的差别在于求整数商的不同：取余，遵循尽可能让商向0靠近的原则；取模，遵循尽可能让商向负无穷靠近的原则。 e.g., 4rem(-3)=1(商取-1) 4mod(-3)=-2(商取-2) 简单地，对于负数对正数的%运算，可以用绝对值计算后再直接计算符号。 e.g., cout<<4...

Problem Key Star(s) Date Attention 2.Add Two Numbers 链表 ⭐⭐ May 29,2019 7.Reverse Integer ⭐ May 27,2019 取余和取模的区别 8.S...

392.Is Subsequence Given a stringsand a stringt, check ifsis subsequence oft. You may assume that there is only lower case English letters in bothsandt.tis potentially a very long (lengt...

455.Assign Cookies Assume you are an awesome parent and want to give your children some cookies. But, you should give each child at most one cookie. Each child i has a greed factor gi, which is the ...

45.Jump Game II Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position...

240.Search a 2D Matrix II Medium Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties: Integers in each row are sorted in ascending f...

169.Majority Element Easy Given an array of sizen, find the majority element. The majority element is the element that appearsmore than⌊ n/2 ⌋times. You may assume that the array is non-empty ...

2.Add Two Numbers Medium You are given twonon-emptylinked lists representing two non-negative integers. The digits are stored inreverse orderand each of their nodes contain a single digit. Add ...

参考TwoSum问题 15.3Sum Medium Given an arraynumsofnintegers, are there elementsa,b,cinnumssuch thata+b+c= 0? Find all unique triplets in the array which gives the sum of zero. Note: T...

1.Two Sum Easy Given an array of integers, returnindicesof the two numbers such that they add up to a specific target. You may assume that each input would haveexactlyone solution, and you may...

120.Triangle Medium Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the following triangle [ ...

8.String to Integer (atoi) Implementatoiwhichconverts a string to an integer. The function first discards as many whitespace characters as necessary until the first non-whitespace character i...

53.Maximum Subarray Easy Given an integer arraynums, 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,...