第五次作业

1.

#列表+循环 包装成一个函数
a=list(range(10))
b=list(range(0,50,5))
c=[]
for i in range(len(a)):
    c.append(a[i]**2+b[i])
print(a,b,c)

结果：

2.

#pip install numpy
import numpy
a=numpy.arange(10)
b=numpy.arange(0,50,5)
c=a+b
print(a,b,c)

结果：

3.

def pySum(n):
    a=list(range(n))
    b=list(range(0,5*n,5))
    c=[]
    for i in range(len(a)):
        c.append(a[i]**2+b[i]**3)
    return(c)
print(pySum(10))

def npSum(n):
    a=list(range(n))
    b=list(range(0,5*n,5))
    c=[]
    for i in range(len(a)):
        c.append(a[i]**2+b[i]**3)
    return(c)

print(pySum(10))

from datetime import datetime
start = datetime.now()
pySum(5500000)
delta=datetime.now()-start
print(delta)

start= datetime.now()
npSum(5500000)
delta=datetime.now()-start

print(delta)

结果：