Last Updated: 10 Oct, 2022
Star Triangle
Easy
Asked in company
Ninja was very fond of patterns. For a given integer ‘N’, he wants to make the N-Star Triangle.
Example:
Input: ‘N’ = 3
Output:
*
***
*****
Input Format:
The first and only line of each test case contains an integer ‘N’.
Output format:
Return a 2D array of characters that represents the N-Star Pattern.
Constraints :
1 <= N <= 20
Time Limit: 1 sec
Approaches
Approach:
The solution is iterating on the pattern and printing every cell with ‘*’ or spaces.
The steps are as follows :
Function void nStarTriangle(int ‘N’)
- Int ‘gap’ = ‘N’-1, ‘stars’ = 1.
- For ‘i’ from 0 to ‘N’-1:
- For j from 0 to ‘gap’-1:
- Print ’ ’
- For j from gap+1 to gap+stars-1:
- Print ’*’
- gap–
- star+=2
- For j from 0 to ‘gap’-1: