双重循环打印图形

目录

直角三角形

a="* "
for i in range(0,5):
 #   print("  " * (4-i), end="")
    for j in range (0,i+1):
        print(a,end="")
    print()

在这里插入图片描述

a="* "
for i in range(0,5):
    print("  " * (4-i), end="")
    for j in range (0,i+1):
        print(a,end="")
    print()

在这里插入图片描述

a="* "
for i in range(0,5):
    #print("  " * (4-i), end="")
    for j in range (0,5-i):
        print(a,end="")
    print()

在这里插入图片描述

a="* "
for i in range(0,5):
    print("  " * i, end="")
    for j in range (0,5-i):
        print(a,end="")
    print()

在这里插入图片描述

菱形

a="* "
for i in range(1,5):
    print(" "*(4-i),end="")
    for j in range(1,i+1):
        print(a,end="")
    print()
for k in  range(1,5):
    print(" "*k,end="")
    for l in range(5-k,1,-1):
        print(a,end="")
    print()

在这里插入图片描述

s = '*'
for i in range(1, 8, 2):
    print((s * i).center(7))
for i in reversed(range(1, 6, 2)):
    print((s * i).center(7))

在这里插入图片描述

99乘法表

for i in range(1, 10):
    for j in range(1, i+1):
        print(f'{j}x{i}={i*j}\t', end='')
    print()

在这里插入图片描述

99加法表

for i in range(1, 10):
    for j in range(1, i+1):
        print(f'{j}+{i}={i+j}\t', end='')
    print()

在这里插入图片描述

冒泡排序

import math
from random import random
zy=[]
for i in range(0,10):
    zy.append(int(random()*100))
print(zy)
for j in range(0,len(zy)-1) :#总共比较的轮数
    flag=1
    for i in range(0,len(zy)-1-j):#每轮比较的次数
             if zy[i] > zy[i +1]:
                tmp=zy[i]
                zy[i]=zy[i+1]
                zy[i+1]=tmp
                flag=0
    if(flag):
        print(f"经过{j+1}轮比较，已经有序")
        break
print(zy)