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判断字符串是否有重复字条
strs = 'Goaod' hashTable = dict() listStrs = list(strs) i = 0 while i < len(strs): if listStrs[i] in hashTable: print("有重复字符") break else: hashTable[listStrs[i]] = None i += 1判断字符串是否有重复字条
strs = 'Goaod' hashTable = dict() listStrs = list(strs) i = 0 while i < len(strs): if listStrs[i] in hashTable: print("有重复字符") break else: hashTable[listStrs[i]] = None i += 1