publicclassSolution {publicintthreeSumClosest(int[] num,inttarget) {intresult = num[0] + num[1] + num[num.length - 1];//初始化Arrays.sort(num);//选择一个数for(inti = 0; i < num.length - 2; i++) {intstart = i + 1, end = num.length - 1;//双指针指向最小数和最大数wh...
1.两个指针i,j,当i<j时,不断两头往里面扫描 2.每扫描一个位置计算当前的面积,并刷新最大的面积 3.ai和aj的小者继续往里面递进 时间复杂度O(n) intmaxArea(int* height,intheightSize) {if(NULL==height)return0;inti=0,j=heightSize-1;intarea,t_max=0;while(i<j){ area=(j-i)*(height[i]...
LeetCode Two Pointers related problems before I wrote this article, I just think that two pointer technique is nothing like iteration, but in an efficient way. it’s like brute force with memo. sometimes, I mean, many times, I just implement those things straightly, and after that I found...
This leetcode's problem is a favorite question of coding interviews. The data structure we are going to work with is Singly LinkedList. It's super fun. Note: We are not going to use the inbuilt LinkedList class of C# because that is a doubly linked list....
75 BLIND CURATED LEETCODE QUESTIONS: Array Two Sum #1 👯 ❓: Given an array of integers nums & an integer target, return indices of the two numbers such that they add up to target. 🐣: Given nums = [2, 7, 11, 15], target = 9, Because nums[0] + nums[1] = 2 + 7 = ...
Problem link:https://leetcode.com/explore/interview/card/top-interview-questions-easy/92/array/674/Solutions: 1. Sort and merge:We firstly sort the two arrays and use two pointers to compare the ele…
Leetcode 4. Median of Two Sorted Arrays 题目描述:找出两个有序数组的中位数,两个有序数组不同时为空。 题目链接:Leetcode 4. Median of Two Sorted Arrays 这个是就是归并排序归并的部分,很经典。利用外部排序先得出结果,然后再求中位数,当然下面开一个新的那么大的数组是没有必要的。 代码如下 参考...
Leetcode: Intersection of Two Arrays II,用HashMapFollowUp1:用twopointer解,可以省存成HashMapFollowUp2:用在长的数组里面binarySearch可解FollowUp3:Whatifelementsofnums2arestoredondisk,andt
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If there is no such window in S that covers all characters in T, return the empty string"". If there are multiple such windows, you are guaranteed that there will always be only one unique minimum window in S. Solution: windows problem: use two pointer, fix left and move right pointer...