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Algorithms, Distributed System, Machine Learning
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HackerRank - String Construction

Over-thinking will not get you there though : )

The trick is QUITE easy: # of unique chars.

def stringConstruction(s):
    return len(set(s))

 

posted on 2017-12-22 05:30  Tonix  阅读(123)  评论(0)  编辑  收藏  举报