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] ...
LeetCode题解之 Intersection of Two Arrays 1、题目描述 2、问题分析 借助于set来做。 3、代码 1 class Solution { 2 public: 3 vector<int> intersection(vector<int>& nums1, vector<int>& nums2) { 4 vector<int> res; 5 set<int> s1; 6 set<int> s2; 7 for( auto & n : nums1) 8 s1...
Given two integer arraysnums1andnums2, returnan array of their intersection . Each element in the result must beuniqueand you may return the result inany order. Example 1: Input:nums1 = [1,2,2,1], nums2 = [2,2]Output:[2] Example 2: Input:nums1 = [4,9,5], nums2 = [9,4...
Follow up: 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 el...
[LeetCode] 350. Intersection of Two Arrays II Given two arrays, write a function to compute their intersection. Example 1: Input: nums1 =[1,2,2,1], nums2 =[2,2] Output:[2,2] 1. 2. Example 2: Input: nums1 =[4,9,5], nums2 =[9,4,9,8,4]...
LeetCode力扣 350. 两个数组的交集 II Intersection of Two Arrays II 104 -- 9:07 App LeetCode力扣 509. 斐波那契数 Fibonacci Number 89 -- 7:44 App LeetCode力扣 56. 合并区间 Merge Intervals 104 -- 6:32 App LeetCode力扣 1. 两数之和 Two Sum 93 -- 7:48 App LeetCode力扣 557. 反...
Golang Leetcode 349. Intersection of Two Arrays.go 思路 用map保存第一个数组的元素,然后遍历第二个数组,如果已经在map中存在,就添加到结果集 code 代码语言:javascript 复制 funcintersection(nums1[]int,nums2[]int)[]int{m:=make(map[int]bool)for_,v:=range nums1{m[v]=true}ret:=[]int{}for...
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...
What if elements of nums2 are stored on disk, and the memory is limited such that you cannot load all elements into the memory at once? 思路: Solution 1: 这道题就是Intersection of Two Arrays的加强版。同样用HashMap来做。需要考虑在intersection中重复的次数。 代码如下: public class Solution ...
349. Intersection of Two Arrays # 题目# Given two arrays, write a function to compute their intersection. Example 1: Input: nums1 = [1,2,2,1], nums2 = [2,2] Output: [2] Example 2: Input: nums1 = [4,9,5], nums2 = [9,4,9,8,4] Output: [9,4] Note: Each element...