题解 | 统计字符

import sys
   
s = input()
count = [0, 0, 0, 0]  # 初始化四个计数器

a = "qwertyuioplkjhgfdsazxcvbnm"
b = " "
c = "1234567890"

for i in s:
    if i in a:
        count[0] += 1  # 字母
    elif i in b:
        count[1] += 1  # 空格
    elif i in c:
        count[2] += 1  # 数字
    else:
        count[3] += 1  # 其他字符

for i in range(4):
    print(count[i])