题解 | #挑7#
挑7
https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
import re # 输入数值转换为int a = int(input()) pattern = r"7" b = [] # 循环 for i in range(1, a + 1): # 判断是否可以被7整除 if i % 7 == 0: b.append(i) elif str(i).count("7") > 0: b.append(i) print(len(b))