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Given a number N, write a program to print an inverted Hollow pyramid of 2 * N - 1 rows using numbers.
output should be:

      1
    2 2
  3   3
4     4
  3   3
    2 2
      1


What I have tried:

N = int(input())
for i in range(-N+1, N):
     for j in range(abs(i)):
        print(" ", end="")
    for k in range(N-abs(i)):
        if k == 0 or k == N-abs(i)-1:
            print(str(i+N) + " ", end="")
        else:
            print("  ", end="")
    print()
The output of the above code  is
  1 
 2 2 
3   3 
 4 4 
  5
Posted
Updated 10-May-23 23:18pm
v2

The reason it is not what you needed is that it's a solution to a different problem. You can't just find code on the internet and assume that it will do what you need to hand in, or that anyone else is going to force it to do what your teacher requested for you.

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you.

So we need you to do the work, and we will help you when you get stuck. That doesn't mean we will give you a step by step solution you can hand in!
Start by explaining where you are at the moment, and what the next step in the process is. Then tell us what you have tried to get that next step working, and what happened when you did.

I'd suggest that you throw that away, and start by writing your own code to solve the problem you were set instead. That way, you start developing the skills you are going to need for future assignments on simple tasks - and if you don;t, then the more complex tasks you are set later which assume that you have the rudiments of such skills will be completely beyond you ... and then you fail the course.

If you are having problems getting started at all, then this may help: How to Write Code to Solve a Problem, A Beginner's Guide[^]
 
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Python
N=int(input())
if(N==1):print("1")
else:
    print(((2*N)-2)*" "+"1")
    for i in range(2,N+1):
        spaces=(i-2)*"  "
        print((N-i)*"  "+str(i)+" "+spaces+str(i))
    for i in range(N-1,1,-1):
        spaces=(i-2)*"  "
        print((N-i)*"  "+str(i)+" "+spaces+str(i))
    print(((2*N)-2)*" "+"1")
 
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v2
Comments
Richard Deeming 11-May-23 6:54am    
You don't help anyone by doing their homework for them.

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