年龄与疾病暴力解法

解题思路:先输入，之后定义每个年龄层的人，接着再除以总数即可

注意事项:

参考代码:

n = int(input())

arr = list(map(int, input().split()))  

a = 0  # 表示0~18

b = 0  # 表示19~35

c = 0  # 表示36~60

d = 0  # 表示61以上

for age in arr:

    if 0 <= age <= 18:

        a += 1

    elif 19 <= age <= 35:

        b += 1

    elif 36 <= age <= 60:

        c += 1

    elif age >= 61:

        d += 1

res1 = a / n

res2 = b / n

res3 = c / n

res4 = d / n

print(f"{res1:.2%}")

print(f"{res2:.2%}")

print(f"{res3:.2%}")

print(f"{res4:.2%}")