classSolution{public:vector<int>intersection(vector<int>& nums1, vector<int>& nums2){sort(nums1.begin(), nums1.end());sort(nums2.begin(), nums2.end());// merge two sorted arraysvector<int> ret;inti =0, j =0;while(i < nums1.size() && j < nums2.size()) {if(nums1[i] ...
1、这道题给定两个vector,要求返回两个vector的交集,比如nums1=[1,2,2,1],nums2=[2,2],返回的交集是[2,2],其中有多少个相同的元素就返回多少个。返回的交集不讲究顺序。 2、这道题看完题意,熟悉leetcode的同学应该会马上想到先排序,排序之后的两个vector来比较,时间复杂度会下降很多。 如果不排序,那就...
What if the given array is already sorted? How would you optimize your algorithm? What if nums1’s size is small compared to nums2’s size? Which algorithm is better? What if elements of nums2 are stored on disk, and the memory is limited such that you cannot load all elements into ...
If both nums1 and nums2 are so huge that neither fit into the memory, sort them individually(external sort),then read 2 elements from each array at a time in memory, record intersections. I think the second part of the solution is impractical, if you read 2 elements at a time, this ...
//leetcode.com/discuss/interview-question/914249/Uber-or-Phone-or-Union-and-Intersection-of-Two-Sorted-Interval-Lists */ public class UnionAndIntersectionOfTwoSortedIntervalLists { public static void main(String[] args) { } public int[][] intersectionOfTwoIntervals(int[][] a, int[][] b) ...
What if the given array is already sorted? How would you optimize your algorithm? What if nums1's size is small compared to num2's size? Which algorithm is better? What if elements of nums2 are stored on disk, and the memory is limited such that you cannot load all elements into the...
Leetcode:Question4--Median of Two Sorted Arrays 题目描述 解法 这道题目假如采取最普通的做法,即为将两个数组结合在一起,再进行排序,然后取出直接取出中位数即可。排序的算法最优复杂度为 O(nlogn),而取出中位数的复杂度为O(n),遍历两个数组的复杂度也是O(n),所以整个算法的复杂度为O(nlogn),明显...
LeetCode-Intersection of Two Arrays II Description: Given two arrays, write a function to compute their intersection. Example 1: Input: nums1 = [1,2,2,1], nums2 = [2,2] Output: [2,2] Example 2: Input: nums1 = [4,9,5], nums2 = [9,4,9,8,4] O...350. Intersection of...
Leetcode 160. Intersection of Two Linked Lists 技术标签: Leetcode文章作者:Tyan 博客:noahsnail.com | CSDN | 简书 1. Description 2. Solution Version 1 Version 2 Reference https://leetcode.com/problems/intersection-of-two-linked-lists/description/......
https://leetcode.com/problems/intersection-of-two-arrays-ii/discuss/82269/Short-Python-C%2B%2B https://leetcode.com/problems/intersection-of-two-arrays-ii/discuss/82241/AC-solution-using-Java-HashMap https://leetcode.com/problems/intersection-of-two-arrays-ii/discuss/82263/C%2B%2B-hash-tabl...