for循環
1.打印左上直角三角形
形如:
*
* *
* * *
for i in range(10):
for j in range(0, i):
print("*", end=" ")
for k in range(i, 10):
print("", end="")
print("")
2.打印左下直角三角形
形如:
* * *
* *
*
for i in range(10):
for j in range(0, 10-i):
print("*", end=" ")
for k in range(10-i, 10):
print("", end="")
print("")
3.打印右上直角三角形
形如:
*
* *
* * *
for i in range(10):
for j in range(0, 10-i):
print(" ", end=" ")
for k in range(10-i, 10):
print("*", end=" ")
print("")
4.打印右下直角三角形
形如:
* * *
* *
*
for i in range(10):
for j in range(0, i):
print(" ", end=" ")
for k in range(i, 10):
print("*", end=" ")
print("")
5.打印正三角形
形如:
*
* *
* * *
for i in range(10):
for j in range(0, 10-i):
print("", end=" ")
for k in range(10-i, 10):
print("*", end=" ")
print("")
6.打印倒正三角形
形如:
* * *
* *
*
for i in range(10):
for j in range(0, i):
print("", end=" ")
for k in range(i, 10):
print("*", end=" ")
print("")
7.打印乘法表
1*1=1
2*1=2 2*2=4
3*1=3 3*2=6 3*3=9
4*1=4 4*2=8 4*3=12 4*4=16
5*1=5 5*2=10 5*3=15 5*4=20 5*5=25
6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36
7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49
8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64
9*1=9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81
for i in range(10):
for j in range(i):
j = j + 1
print("%d*%d=%d" %(i, j, i*j), end=" ")
print("")
while循環
1.左側三角形
j = 1
while j<=9:
i = 1
while i<=j:
print('*', end=' ')
i+=1
print(' ')
j+=1
2.左側倒三角形
j = 9
while j>=1:
i = 1
while i<=j:
print('*', end=' ')
i+=1
print('')
j-=1