* * * * *
* * * *
* * *
* *
*
i = 1 # 预先规定行数
while i < 6: # 设定条件1,以保证行数为5,在第六行i=0停止运行
j = 1 # 给变量j赋值为0
while j < 7-i : # 规定条件2,以保证每一行*的数量与行数相同
print("*",end="\t") # \t 为ASCII水平制表符,end=""是为了不让代码自动换行
j +=1 # 使每一行的*的数量增长
print("") # 让每一行换到下一行
i += 1 # 使行数不断地增长
*
* *
* * *
* * * *
* * * * *
line = 5
i=1
while i <= line:
j =1
while j <= i:
print("*", end = "\t")
j+=1
print("")
i+=1
*
* *
* * *
* * * *
* * * * *
line = 5
i=1
while i <= line:
j = 1
# 内循环
while j < 6-i: # 空格的数量
print(" ", end="\t")
j += 1
k = 1 # * 的数量
while k < i + 1:
print("*", end="\t")
k += 1
print("")
i+=1
注:对调 j 和 k 的位置打印出来的结果为类型(2)
* * * * *
* * * *
* * *
* *
*
line = 5
i=1
while i <= line:
j = 1
while j < i:
print(" ", end="\t")
j += 1
k = 1
while k <= line + 1 - i:
print("*", end="\t")
k += 1
print("")
i+=1
*
* * *
* * * * *
* * * * * * *
* * * * * * * * *
line = 5
i = 1
while i <= line:
j = 1
while j <= line - i:
print(" ", end="\t")
j += 1
k = 1
while k <= 2 * i - 1:
print("*", end="\t")
k += 1
print("")
i += 1
* * * * * * * * *
* * * * * * *
* * * * *
* * *
*
line = 5
i = 1
while i <= line:
j = 1
while j <= i:
print(" ", end="\t")
j += 1
k = 1
while k <= 2*(line + 1 -i) - 1:
print("*", end="\t")
k += 1
print("")
i += 1