题解 | #牛牛的替换#
牛牛的替换
http://www.nowcoder.com/practice/f2a107dbb99243798d3048a672e8f747
li = list(input().split()) a = input() if a.count(li[1]) == 0: b = a else: for i in range(a.count(li[1])): b = a.replace(li[1], li[2]) if b.count(li[3]) == 0: c = b else: for i in range(b.count(li[3])): c = b.replace(li[3], li[4]) print(c)
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