From d51d819060914d89b4eb89bd9a9495e48a10ab22 Mon Sep 17 00:00:00 2001
From: X-shuffle <53906918+X-shuffle@users.noreply.github.com>
Date: Thu, 19 Aug 2021 22:02:21 +0800
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更新 0349.两个数组的交集 go版本（利用set，不用统计次数，减少空间复杂度）
---
 problems/0349.两个数组的交集.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/problems/0349.两个数组的交集.md b/problems/0349.两个数组的交集.md
index 7489352d..62abf639 100644
--- a/problems/0349.两个数组的交集.md
+++ b/problems/0349.两个数组的交集.md
@@ -143,6 +143,26 @@ func intersection(nums1 []int, nums2 []int) []int {
     return res
 }
 ```
+```golang
+//优化版，利用set，减少count统计
+func intersection(nums1 []int, nums2 []int) []int {
+    set:=make(map[int]struct{},0)
+    res:=make([]int,0)
+    for _,v:=range nums1{
+        if _,ok:=set[v];!ok{
+            set[v]=struct{}{}
+        }
+    }
+    for _,v:=range nums2{
+        //如果存在于上一个数组中，则加入结果集，并清空该set值
+        if _,ok:=set[v];ok{
+            res=append(res,v)
+            delete(set, v)
+        }
+    }
+    return res
+}
+```
 
 javaScript: