349. Intersection of Two Arrays
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题目摘要
写一个函数找到两个给定数组的相同元素,返回结果中每个元素只出现一次
解法
* HashMap,但是时间较长
* 先将两个数组排序,再逐项比较
注意
1. HashMap的用法
2. HashMap不能直接转换为数组
3. 排序法时,现新建一个nums1数组长度的临时存储数组,最后搬移到另一个正确长度的数组中
可问问题
原题
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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- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays[][
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
- 349. Intersection of Two Arrays
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