Method firstUniqChar

String/FirstUniqueCharacterInAString.py:27–48

:type s: str :rtype: int

(self, s)

"""
class Solution(object):
    def firstUniqChar(self, s):
        """
        :type s: str
        :rtype: int
        """
        
        x = {}
        
        for i in s:
            try:
                x[i] += 1
            except:
                x[i] = 1
        
        for i in x.keys():
            if x[i] > 1:
                x.pop(i)
        
        for i in range(len(s)):
            if s[i] in x:
                return i
        return -1