Recursion

[koolinka]

Hi, I'm working on a project for my class in which recursion MUST be use to display a corresponding amount of lines to a user's input. So far I have this code.

n = int(input("How many line to display? "))

def show_ast(n):

    if(n>0):

        show_ast(n-1)

    num = n;

    st = ""

    while(num>0):

        st +='*'

        num -= num

        print(st)

show_ast(n)

I can't figure out why it only prints a single asterisk per line and doesn't add one subsequently.

Any help is appreciated. Thank you.

---

For anyone who viewed this, thank you. I was able to figure it out. If anything hopefully this can help someone in the future

n = int(input("How many line to display? "))

def show_ast(n):

    if(n>0):

        show_ast(n-1)

    num = n

    st = ""

    while(num>0):

        st += '*'*num

        num -= num

        print(st)

show_ast(n)

I just multiplied the number of asterisks in the while loop by the user input.

[ichabod801]

The problem is that you are subtracting num from num on line 17, so your look only runs once, not num times. Although if you want a loop to run a certain number of times you should use a for loop:

def show_ast(n):
    if n > 0:
        show_ast(n - 1)
    text = ''
    for ast in range(n):
        text += '*'
    print(text)

But with the multiplication of the string that you figured out, you don't need any loop:

def show_ast()
    if n > 0:
        show_ast(n - 1)
    print('*' * n)