1publicclassSolution {2publicint[] twoSum(int[] numbers,inttarget) {34if(numbers.length <= 1)returnnull;56Pair[] pairs =newPair[numbers.length];7for(inti = 0 ; i < numbers.length ; i++){8pairs[i] =newPair(numbers[i] , i+1);9}1011Comparator<Pair> comparator =newComparator<Pair...
Can you solve this real interview question? Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may n
if (numbers[start] + numbers[end] < target) { //这里需要判断,到底是跳一半还是走一步,就再加个判断。 if (numbers[middle] + numbers[end] < target) { start = middle; } else { start++; } } else if(numbers[start] + numbers[end] > target) { if (numbers[middle] + numbers[start] ...
public int threeSumClosest(int[] nums, int target) { // 最小 int result = nums[0] + nums[1] + nums[2]; //1. 排序 Arrays.sort(nums); //2. 双指针 for(int i = 0; i < nums.length-2; i++) { int l = i+1; int r = nums.length-1; if (nums[i] + nums[i+1] +...
Can you solve this real interview question? Max Number of K-Sum Pairs - You are given an integer array nums and an integer k. In one operation, you can pick two numbers from the array whose sum equals k and remove them from the array. Return the maximu
visited.insert(make_pair(numbers[i], i)); }else{ res.push_back(visited[target- numbers[i]] +1); res.push_back(i+1);returnres; } }returnres; } }; 3SUM:https://leetcode.com/problems/3sum/ 这道题就是根据之前说的框架,先sort,然后reduce,然后用2SUM处理。这里的reduce很直接了,就是依...
publicint[]twoSum(int[]nums,inttarget){int[]result=newint[2];finalintlength=nums.length;Map<Integer,Integer>map=newHashMap<>(length);for(inti=0;i<length;i++){intnum=nums[i];inttargetKey=target-num;if(map.containsKey(targetKey)){result[1]=i;result[0]=map.get(targetKey);returnresul...
【python-双指针】pair with target sum 找不到该题对应leetcode的哪一题。。。 问题描述: 给定一个有序数组和一个目标和,在数组中找到一对和等于给定目标的数组,有就返回下标,没有就返回[-1,-1]。 例如: s=[1,2,3,4,5,6,7,8],k=14,返回[5,7],也就是下标为5和下标为7的和为14:6+8=14...
1744-number-of-ways-to-form-a-target-string-given-a-dictionary 1876-map-of-highest-peak 1878-check-if-array-is-sorted-and-rotated 1886-minimum-limit-of-balls-in-a-bag 189-rotate-array 1895-minimum-number-of-operations-to-move-all-balls-to-each-box 1915-check-if-one-str...
leetcode求 和问题描述 (K sum problem): K sum的求和问题一般是这样子描述的:给你一组N个数字(比如 vector<int> num), 然后给你一个常数(比如 int target) ,我们的goal是在这一 堆数里面找到K个数字,使得这K个数字的和等于target。 注意事项 (constraints): 注意这一组数字可能有重复项:比如 1 1...