LeetCode:Intersection of Two Arrays

 

Intersection of Two Arrays

 

 

Total Accepted: 5682 Total Submissions: 12479 Difficulty: Easy

 

Given two arrays, write a function to compute their intersection.

Example:
Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2].

Note:

• Each element in the result must be unique.
• The result can be in any order.

 

 

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 (E) Intersection of Two Arrays II

 

 

 

 

思路：

使用Set，因为Set中不能有重复元素。

 

 

java code:

 

public class Solution {
    public int[] intersection(int[] nums1, int[] nums2) {
        
        int len1 = nums1.length,len2 = nums2.length;
        
        Set set = new HashSet();
        Set interSet = new HashSet();
        
        for(int i=0;i