先将两数组排序,然后使用双指针,依次判断两数组中的元素是否相等,如果某个元素大于或小于另外一个元素,则将指针向后移动,如果相等,则将元素放入HashSet中,然后将HashSet中的元素迭代放入数组,最后返回。 因为使用Arrays类的sort方法,所以时间复杂度是O(n log(n)),空间复杂度是O(n)。 publicint[]intersection3(i...
先将两数组排序,然后使用双指针,依次判断两数组中的元素是否相等,如果某个元素大于或小于另外一个元素,则将指针向后移动,如果相等,则将元素放入ArrayList中,然后将ArrayList中的元素迭代放入数组,最后返回。 因为使用Arrays类的sort方法,所以时间复杂度是O(n log(n)),空间复杂度是O(n)。 publicint[]intersect(int...
publicclassSolution{publicint[]intersect(int[]nums1,int[]nums2){List<Integer>list=newArrayList<Integer>();intlength1=nums1.length;intlength2=nums2.length;int[]ret=newint[Math.min(length1,length2)];intindex=0;HashMap<Integer,Integer>map=newHashMap<Integer,Integer>();for(inti=0;i<length1...
Given two arrays, write a function to compute their intersection. Example: Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2]. Note: 1、Each element in the result must be unique. 2、The result can be in any order. 要完成的函数: vector<int> intersection(vector<int>& ...
LeetCode 350: 两个数组的交集 II Intersection of Two Arrays II hashmappythonjava编程算法 Given two arrays, write a function to compute their intersection. 爱写bug 2019/10/30 4530 两个数组的交集II 编程算法 遍历nums1并使用一HashMap存储每个元素出现的次数,接着遍历nums2,若当前元素在在map中出现次...
https://leetcode.com/problems/intersection-of-two-arrays/discuss/81969/Three-Java-Solutions Given two arrays, write a function to compute their intersection. Example 1: AI检测代码解析 Input: nums1 =[1,2,2,1], nums2 =[2,2] Output:[2] ...
Java Collections Java List Get started with Spring 5 and Spring Boot 2, through theLearn Springcourse: >> CHECK OUT THE COURSE 1. Overview In this tutorial, we'll learn how to retrievethe intersection of twoLists. Like many other things, this has become much easier thanks to the introducti...
3.该代码最后返回的时候使用了数组的拷贝的方式。Arrays.copyOf(array, count)。 解法二:排序+双指针 解题思路: 1)对数组nums1进行排序; 2)对数组nums2进行排序; 3)遍历数组nums1和nums2中元素,并比较对应的元素, 若相等,则将其保存到输出结果中,并变化两个数组对应的索引 ...
数组一的数据存入hashset 遍历数组二如果set中存有该数据存入arraylist中,同时从set中remove该元素,防止多个元素重复 遍历list转变为array返回数据 classSolution{public int[]intersection(int[]nums1,int[]nums2){Set<Integer>set=newHashSet<Integer>();List<Integer>arrayList=newArrayList<Integer>();for(Integer ...
Find Intersection of Two Arrays – Java Code In our previous approach, we have used two for loops to solve this problem. Let’s improve our solution to solve this problem in single loop. To solve this problem in single iteration, here are the steps – ...