Alpha Pattern Problem Statement

Ninja wants to create a pattern using characters in a specified number of rows ‘N’. The pattern arranges characters in increasing order, such that the first row has 1 character, the second has two, and so on, starting from 'A' and ascending to 'Z'.

Example:

Input:

T = 1
N = 3

Output:

A
BB
CCC

Constraints:

• 1 <= T <= 10
• 1 <= N <= 26
• Time Limit: 1 sec

Note:

Implement the function to generate the required pattern for each test case; printing is handled by the system.