python循环控制语句练习二三角形星号打印输出

打印输出

*
**
***
****
*****

    *
   **
  ***
 ****
*****

*****
 ****
  ***
   **
    *

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

    for j in range(i,5):
        print(" ", end=" ")

    print("")

    for j in range(0,i):
        print(" ",end=" ")

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

    print("")

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