题解 | #计算某字符出现次数#
计算某字符出现次数
https://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
import sys
num = 0
str = sys.stdin.readline().strip()
n = sys.stdin.readline().strip()
n1 = n.upper()
n2 = n.lower()
for i in str[::1]:
if n1 == i or n2 == i:
num = num + 1
print(num)