http://leetcode.com/onlinejudge#question_1 Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where index1 must be less than index2. Please n...
std::vector<int> twoSum(std::vector<int> &numbers,inttarget) {//Key is the number and value is its index in the std::vector.std::unordered_map<int,int>hash;for(inti =0; i < numbers.size(); i++) {intnumberToFind = target -numbers[i];//if numberToFind is found in map, re...
LeetCode1022.Sum of Root To Leaf Binary Numbers(从根到叶的二进制数之和) 1022.Sum of Root To Leaf Binary Numbers(从根到叶的二进制数之和) Description Difficulty: easy Example 1: Note: 分析 参考代码 Description Given a binary tree, each node has value 0 or 1. Each root-to-leaf path...
Solution Reference https://leetcode.com/problems/minimum-index-sum-of-two-lists/description/...LeetCode 891. Sum of Subsequence Widths (找规律) Given an array of integers A, consider all non-empty subsequences of A. For any sequence S, let the width of S be the difference between the ...
I have tried 2-pointers/sliding-window but it can't handle negative cases and gives the wrong answer. Can the geniuses of CF help me out on how to approach this problem? Here is my (non working) code: publicintshortestSubarray(int[]A,intK){intptr=0;intsum=0;intsol=Integer.MAX_VALU...
首先复制数组使用Arrays.copyOf() 将两次循环摘出来一个函数。 publicint[]twoSumSix(int[]nums,inttarget){int[]sortNums=Arrays.copyOf(nums,nums.length);Arrays.sort(sortNums);inti=0;intj=sortNums.length-1;while(i<j){if(sortNums[i]+sortNums[j]==target){returntwoIndexes(sortNums[i],sortNum...
Given three integers n, k, and target, return the number of possible ways (out of the kn total ways) to roll the dice so the sum of the face-up numbers equals target. Since the answer may be too large, return it modulo 10^9 + 7. ...
Find all possible combinations ofknumbers that add up to a numbern, given that only numbers from 1 to 9 can be used and each combination should be a unique set of numbers. Ensure that numbers within the set are sorted in ascending order. ...
[Leetcode 1, Medium] Two sum Problem: Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where index1 must be less than index2....
Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. Converting the input string to integer is NOT allowed. You should NOT use internal library such as BigInteger. ...