CODEWITHSUNDEEP
pythonloops
Vortex
Vortex

Reputation: 27

Functions and for loops

Python newbie here. I Got an exercise to write a function that receives 2 parameters, the first is a single note string, and the other is the max length(int) of the middle row. (i.e arrow(my_char, max_length) Basically the function is supposed to return an "arrow formation". I'm supposed to use a for loop for this. for ex. the print for print(arrow("*", 5)) is supposed to be:

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

What I've done so far:

for i in range(1, max_length + 1):
    print (my_char * i)

for i in range(max_length, 1, -1):
    print (my_char * i)

I got the formation right, but the formation is not returned and I need to add spaces between the asterisks.

Upvotes: 1

Views: 277

Answers (2)

Djeutsch
Djeutsch

Reputation: 83

Following your question description and what you did, it appears that to works properly the argument of print() in your second for loop must be my_char*(i-1) instead of my_char*i. Then you can add spaces between asterisks, and tie all into a function taking 2 parameters as follows:

def arrow(my_char, max_length):
    for i in range(1, max_length + 1):
        print(" ".join(my_char * i))

    for i in range(max_length, 1, -1):
        print(" ".join(my_char * (i-1)))

Example: If you take my_char = "*" and max_length = 5, the function arrow(my_char, max_length) will output:

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

Upvotes: 1

caglar
caglar

Reputation: 380

One of many answers would be like this:

def arrow(char, length):
    for i in range(length):
        for j in range(i):
            print(char + ' ', end='')
        print ()
    for i in range(length,0,-1):
        for j in range(i,0,-1):
            print(char + ' ', end='')
        print ()

Upvotes: 0

Related Questions