公式计算(粗略):
pi = 0
N = 100
for k in range(N):
pi += 1/pow(16, k)*( \
4/(8*k+1) - 2/(8*k+4) - \
1/(8*k+5) - 1/(8*k+6))
print("圆周率值是:{}".format(pi))
输出:
圆周率值是:3.141592653589793
蒙特卡洛方法:
from random import random
from time import perf_counter
DARTS = 1000*1000
hits = 0.0
start = perf_counter()
for i in range(1, DARTS+1):
x, y = random(), random()
dist = pow(x ** 2 + y ** 2, 0.5)
if dist <= 1.0:
hits += 1
pi = 4 * (hits/DARTS)
print("圆周率值是:{}".format(pi))
print("运行时间是:{:.5f}s".format(perf_counter()-start))
输出:
圆周率值是:3.14362
运行时间是:1.02206s
来源:CSDN
作者:乌云的暮年下着雪
链接:https://blog.csdn.net/qq_40390825/article/details/82316986