Floyd's triangle   lists the natural numbers in a right triangle aligned to the left where

 the first row is   1     (unity)
 successive rows start towards the left with the next number followed by successive naturals listing one more number than the line above.


The first few lines of a Floyd triangle looks like this:

 1
 2  3
 4  5  6
 7  8  9 10
11 12 13 14 15



Task

 Write a program to generate and display here the first   n   lines of a Floyd triangle. 
(Use   n=5   and   n=14   rows).
 Ensure that when displayed in a mono-space font, the numbers line up in vertical columns as shown and that only one space separates numbers of the last row.


input "Number of rows needed:- "; rowsNeeded
 
dim colWidth(rowsNeeded)    '    5 rows implies 5 columns
 
for col=1 to rowsNeeded
    colWidth(col) = len(str$(col + rowsNeeded*(rowsNeeded-1)/2))
next
 
currentNumber =1
 
for row=1 to rowsNeeded
    for col=1 to row
        print right$( "  "+str$( currentNumber), colWidth(col)); " ";
        currentNumber = currentNumber + 1
    next
    print
next