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##                    编程之美1.1让cpu曲线听你指挥                       ##

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## 解法一：让cpu跑idle和busy两个不同的循环，控制时间比例，busy可用空循环，idle可

##        用sleep()

import time

def algorithm1():

    while True:

        #调整适当的n,运行时间也是0.01秒,这个n不对

        for i in range(9600000):

            pass

        time.sleep(0.01)

def algorithm2():

    busytime=0.02

    idletime=0.01

    while True:

        startTime=time.time()

        while time.time()-startTime<busytime:

            print(time.time()-startTime)

        time.sleep(idletime)

import math

def algorithm3():

    count=200#抽样频率

    busy=[0]*count

    idle=[0]*count

    for i in range(count):

        busy[i]=(1+math.sin(math.pi*i*2/count))/count#0~2之间－》0~0.01之间

        idle[i]=0.01-busy[i]

    j=0

    while True:

        startTime=time.time()

        j=j%200

        while time.time()-startTime<busy[j]:

            print(time.time()-startTime)

        time.sleep(idle[j])

        j=j+1

def test1_1():

    #algorithm1()

    #algorithm2()

    algorithm3()