2020-02-02

Author: JiayangWu

0387.字符串中的第一个唯一字符/0387-字符串中的第一个唯一字符.py

@@ -0,0 +1,12 @@
+class Solution(object):
+    def firstUniqChar(self, s):
+        """
+        :type s: str
+        :rtype: int
+        """
+        dic = collections.Counter(s)
+        
+        for i, ch in enumerate(s):
+            if dic[ch] == 1:
+                return i
+        return -1