使用for循环的打印图案

# 打印直角三角形
for i in range(1, 6):
    for j in range(1, i + 1):
        print("*", end="")
    print()

# 打印等边三角形
for i in range(1, 6):
    for j in range(1, 6 - i):
        print(" ", end="")
    for k in range(1, i * 2):
        print("*", end="")
    print()

# 打印菱形
for i in range(1, 6):
    for j in range(1, 6 - i):
        print(" ", end="")
    for k in range(1, i * 2):
        print("*", end="")
    print()
for i in range(4, 0, -1):
    for j in range(1, 6 - i):
        print(" ", end="")
    for k in range(1, i * 2):
        print("*", end="")
    print()