From bcd03971db853fdb17d6238b6851bd989ab613dd Mon Sep 17 00:00:00 2001
From: shuwen <shuwenlle@foxmail.com>
Date: Fri, 3 Sep 2021 22:04:27 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=201002.=E6=9F=A5=E6=89=BE?=
 =?UTF-8?q?=E5=B8=B8=E7=94=A8=E5=AD=97=E7=AC=A6.md=20Python3=20=E4=BD=BF?=
 =?UTF-8?q?=E7=94=A8collections.Counter=E5=AE=9E=E7=8E=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/1002.查找常用字符.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/problems/1002.查找常用字符.md b/problems/1002.查找常用字符.md
index c0ca578e..e02780da 100644
--- a/problems/1002.查找常用字符.md
+++ b/problems/1002.查找常用字符.md
@@ -193,6 +193,26 @@ class Solution:
                 hash[i] -= 1
         return result
 ```
+
+Python 3 使用collections.Counter
+```python
+class Solution:
+    def commonChars(self, words: List[str]) -> List[str]:
+        tmp = collections.Counter(words[0])
+        l = []
+        for i in range(1,len(words)):
+            # 使用 & 取交集
+            tmp = tmp & collections.Counter(words[i])
+
+        # 剩下的就是每个单词都出现的字符（键），个数（值）
+        for j in tmp:
+            v = tmp[j]
+            while(v):
+                l.append(j)
+                v -= 1
+        return l
+```
+
 javaScript
 ```js
 var commonChars = function (words) {