#牛客试题# 编写一个函数,计算字符串中含有的不同字符的个数。字符在ACSII码范围内(0~127),换行表示结束符,不算在字符里。不在范围内的不作统计。多个相同的字符只计算一次 例如,对于字符串abaca而言,...
https://gw-c.nowcoder.com/api/sparta/jump/link?link=https%3A%2F%2Fwww.nowcoder.com%2FquestionTerminal%2Feb94f6a5b2ba49c6ac72d40b5ce95f50%3ForderByHotValue%3D1%26questionTypes%3D000100%26mutiTagIds%3D579%26page%3D1%26onlyReference%3Dfalse