12 lines
249 B
Python
12 lines
249 B
Python
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s = "eleetcode"
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def firstUniqChar(s):
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visited = set()
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for i in range(len(s)):
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if s[i] not in visited:
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visited.add(s[i])
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if s.count(s[i]) == 1:
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return i
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return -1
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print( firstUniqChar(s) )
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