Question

from random import random
from math import pi, sin

attempts = int(input("Enter the number of attempts to perform: "))
for i in range(1,attempts):
    ytail = 2.0*random()
    angle = pi*random()
    yhead = ytail + sin(angle)
    if yhead > 2.0:
        print ("hit")
    else:
        print ("not a hit")

您的程序应提示用户尝试执行的次数，并将比率尝试/命中数作为浮点打印所有尝试完成后的数字。

如何获得尝试/命中率？

Answer 1

将命中数存储在变量中，在命中时将其递增，并在迭代后打印该比率。

from random import random
from math import pi, sin

hits = 0
attempts = int(input("Enter the number of attempts to perform: "))
for i in range(0, attempts):
    ytail = 2.0 * random()
    angle = pi * random()
    yhead = ytail + sin(angle)

    if yhead > 2.0:
        hits += 1

print(hits / float(attempts))

Answer 2

如果你不介意使用numpy，这是另一种解决方案：

import numpy as np
attempts = int(input("Enter the number of attempts to perform: "))
ytail = 2.0*np.random.rand(attempts)
angle = np.pi*np.random.rand(attempts)
yhead = ytail + np.sin(angle)
print(np.sum(yhead > 2.0)/attempts)

Python - 查找结果的比率

2 个答案: