圆周率的计算2

gzj137070928

# CalPiVer2

1. # 蒙特卡罗的随机投掷石子的比例计算方法
   
2. from random import random
   
3. from time import perf_counter
   
4. 
   
5. DARTS = 1000*1000
   
6. hits = 0  # 记录在园内的数量
   
7. start = perf_counter()  # 开始计时
   
8. for i in range(1, DARTS + 1):
   
9.     x, y = random(), random()
   
10.     dist = pow(pow(x,2) + pow(y,2), 0.5)
    
11.     if dist <= 1:
    
12.         hits += 1
    
13. pi = 4* hits/DARTS
    
14. end = perf_counter()  # 计时结束
    
15. print("Pi的值为：%.10f" % pi )
    
16. print("计算时间为：%.2f" % (end - start) )

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