1. Multiple choice questions
2. Multiple Choice
3. Programming examples
Write a function to print an asterisk triangle, use this function, pass in data 2, 3, and 4 to print the following Christmas tree graphics Be Be
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*******def Print(x,y,z):
i = 1
m = x-1
while i <= x:
print(" "*(z-x+m-1),"*"*(2*i-1))
i = i+1
m = m-1
i = 1
m = y-1
while i <= y:
print(" "*(z-y+m-1),"*"*(2*i-1))
i = i+1
m = m-1
m=z-1
for i in range(z):
print(" "*m,end="")
m = m-1
print("*"*(2*(i+1)-1))
# x,y,z=map(int,input().split('、'))
Print(2,3,4)
A hundred dollars to buy a hundred chickens
Use 100 yuan to buy 100 chickens; Be Be
Among them, a rooster costs 5 yuan, a hen costs 3 yuan, and a chick costs 3 yuan. Be Be
How many ways to buy the output Be
Please use a double loop to complete this problem, each type of chicken can be 0 Be Be
Example of input and output
| enter | output | |
| Example 1 | none | Cock Hen Chick |
count=0
print('公鸡 母鸡 小鸡')
for x in range(0,21):
for y in range(0,34):
for z in range(3,100):
if x*5+y*3+z/3==100 and x+y+z==100:
count+=1
print('%d %d %d'%(x,y,z))
Monte Carlo method to find the value of pi
Monte Carlo method is suitable for finding the area of a graph according to probability Be Be
Find an unknown amount of data based on the area of two graphs Be Be
Please randomly generate 10,000 points to determine whether they fall into a 1/4 circle with a radius of 1. Be Be
The ratio of the probability of passing to the area of a square with side length 1 Be Be
Calculate the value of π, requiring the output to be forced to two decimal places Be Be
Example of input and output
| enter | output | |
| Example 1 | none | 3.14 |
import random
import math
random.seed(180)
hit = 0.0 #表示随机点在圆内的次数
#请将代码补充完整
darts=10000
for i in range(1,darts+1):
x,y=random.random(),random.random()
dist=math.sqrt(x**2+y**2)
if dist<=1.0:
hit=hit+1
pi = 4.0 * (hit/darts)
print('{:.2f}'.format(pi))