I am trying to make a program that will print a pattern such as:
n = 4
1
12
123
1234
Right now this is what I have:
n = int(input("Please enter a positive integer: "))
line = ""
for currentNum in range(1,n+1):
line = " " * (n-currentNum) + line + str(currentNum)
print(line)
I am not getting the right amount of spaces that I'm hoping that I would get. Any tips? Thanks.
This is what I'm getting on IDLE:
1
12
123
1234
12345
for i in range(1, n+1):
print(" "*(n-i) + "".join(map(str, range(1, i+1))))
There's a much easier way to do this with .rjust.
n = int(input("Please enter a positive integer: "))
line = ''
for current_num in range(1, n+1):
line += str(current_num)
print(str(current_num).rjust(n, ' '))
Or as a one liner to play off of Eugene's answer:
n=int(input());print('\n'.join(''.join(map(str,range(1,i+1))).rjust(n,' ')for i in range(1,n+1)))
The problem is you are appending the spaces and numbers to line each time. You just want to append the numbers and print with the added spaces. If you can't use other functions then something like this will work:
n = int(input("Please enter a positive integer: "))
line = ""
for currentNum in range(1,n+1):
line += str(currentNum)
spaced_line = ' '*(n-currentNum) + line
print(spaced_line)
for i in range(0,n+1):
print(f"{' '*(n - i)}{''.join([str(x) for x in list(range(1,i+1))])}")
Try to avoid concatenating for effective memory management.
