Write a program to print a triangle pattern as shown below

Description:

  • Read a number from user. Let’s say if number is 5, you need to print numbers in triangle pattern as shown below:

If n = 5, then,
1 2 3 4 5
6 _ _ 7
8 _ 9
10 11
12
Note:- Please consider ‘_’ as space. You need to leave space between 2 numbers

Pre-requisites:

  • Loops

Inputs:

  • Read an Integer ‘n’ from the user

Sample Output:


Test Case 1:


Enter the number: 4
1 2 3 4
5     6
7 8
9

Test Case 2:


Enter the number: 5
1 2 3 4 5
6       7
8    9
10 11
12