题解 | #表示数字#
表示数字
https://www.nowcoder.com/practice/637062df51674de8ba464e792d1a0ac6?tpId=37&tqId=21319&rp=1&ru=/exam/oj/ta&qru=/exam/oj/ta&sourceUrl=%2Fexam%2Foj%2Fta%3FtpId%3D37&difficulty=2&judgeStatus=undefined&tags=&title=
s = input() ans = [] flag = False for ch in s: if ch.isdigit(): if not flag: flag = True ans.append("*") ans.append(ch) else: if flag: flag = False ans.append("*") ans.append(ch) # 字符串末尾可能是数字 if flag: ans.append("*") print("".join(ans))