Vfrdtyky

I'd like to print the output as a palindromic triangle of positive numbers (without 0's), either through user input int(input()):

for i in range(1,int(input())+1):

   print(*range(1, i+1),(*range(i-1, -1, -1)))

or as fixed range like this:

for n in range(1,5):

  print(*range(1, n+1),(*range(n-1, -1, -1))

I can get the latter to work as far as this, but I'd like it without the 0's. Two additional issues: 1) Will user input of 5 be the same as hard coded 5 in the range? 2) How to get the 5 included in output? Any idea how this can be done? Thanks in advance.

1 0

1 2 1 0

1 2 3 2 1 0

1 2 3 4 3 2 1 0

Your indexing is just ever so slightly off:

user_range = int(input("Desired limit : ")) + 1



for n in range(1, user_range):

  print(*range(1, n+1),(*range(n-1, 0, -1)))

output:

1

1 2 1

1 2 3 2 1

1 2 3 4 3 2 1

1 2 3 4 5 4 3 2 1

Is this what you want? Rather than hardcoding 5 we are asking the input from the user. And a slight modification to the indexing as well.

for i in range(1,int(input("Enter number : "))+1):

    print(*range(1,i+1), *range(i-1,-1,-1))

Ouput:

Enter number : 7

1 0

1 2 1 0

1 2 3 2 1 0

1 2 3 4 3 2 1 0

1 2 3 4 5 4 3 2 1 0

1 2 3 4 5 6 5 4 3 2 1 0

1 2 3 4 5 6 7 6 5 4 3 2 1 0

Nice fancy work with those ranges and splats. I don't see anything wrong with slicing.

for n in range(1,5):

  print(*range(1, n+1), *range(n-1, -1, -1)[:-1])

Somebody else said this and it seems to work the same:

for n in range(1,5):

  print(*range(1, n+1), *range(n-1, 0, -1))