Last Updated: 20 May, 2021
Star Pattern
Easy
Asked in companies
Print the following pattern
Pattern for N = 4
The dots represent spaces.
Input Format:
The first line contains a single integer ‘T’ representing the number of test cases.
The first line of each test case will contain an integer ‘N’ that is the total number of rows.
Output Format:
For each test case, print the pattern of N lines.
Output for every test case will be printed in a separate line.
Constraints :
1 <= N <= 900
Approaches
The basic idea of this approach is to print the pattern row-wise. The pattern consists of ’N’ rows. Each row contains 2 * ‘N’ - 1 star. In addition to these stars, there are leading spaces. Each row contains ‘N’ - ‘Row’ spaces (where ‘ROW’ is the current row number).
Here is the algorithm:
- Run a loop for ‘ROW’ = 0 to ‘N’:
- To print spaces, create a variable ‘SPACES’ and run a loop till ’N’ - ‘ROW.’
- To print the stars ‘*’, run another loop from 1 to 2 * ‘ROW’ - 1:
- Inside the loop print the star.
- Print a new line.