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warehouse.py

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+##斐波那契数列
+A=[]
+nterms =100
+n1 = 0
+n2 = 1
+count = 2
+if nterms>1:
+    A.append(1)
+    while count < nterms:
+       nth = n1 + n2
+       A.append(nth)
+       n1 = n2
+       n2 = nth
+       count += 1
+
+##判断素数函数
+import math
+def isprime1(x):
+    if x==1:
+        return False
+    for i in range(2,int(math.sqrt(x)+1)):
+        if x % i == 0:
+            return False
+    return True
+
+##倒序输出字符
+def reverse(x):
+    o = 0
+    while x:
+        p = x % 10
+        o = o * 10 + p
+        x //= 10
+    return o   
+
+##求随机整数的均值
+import random
+A=range(0,101,1)
+B=random.sample(A,k=10)
+print(B)
+C=random.randint(2, 6)
+D=random.sample(B,k=C)
+print(D)
+average=sum(D)/len(D)
+print(average)
+##圆周率近似值
+y=eval(input())
+n=1
+s=0
+while n>0:
+    if (1/(2*n-1)) >= y:
+        s=(((-1)**(n-1))/(2*n-1))+s
+        n=n+1
+    else:
+       break
+pi=4*s
+print("pi的近似值为:",pi)
+##阶乘函数
+def jiecheng(x):
+    n=1
+    if x==0:
+        return 1
+    elif x>0:
+        for i in range(1,x+1):
+            n=n*i
+        return n
+##组合数公式函数
+def combine(m,n):
+    return int(jiecheng(m)/(jiecheng(n)*jiecheng(m-n)))
+##组合数求和函数
+def combinesum(x):
+    s=1
+    if x==0:
+        return 1
+    elif x>0:
+        for i in range(0,x):
+            s=s+combine(x,i)
+        return s
+##构造杨辉三角形求和
+def yanghuitriangle(n):
+    s=0
+    for i in range(0,n+1):
+        s=s+combinesum(i)
+    return s
+