Last Updated: 25 Nov, 2020

Number Pattern 1

Easy

Asked in companies

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Problem statement

You are given an integer 'N'. Your task is to print the following pattern for the given N number of rows.

For Example: Pattern for N = 4

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 <= T <= 10
1 <= N <= 10^3

Time Limit: 1 sec

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Approaches

01 Approach

The basic idea of this approach is to print the pattern row-wise. For each row, a pattern is observed: 1 is printed 1 time in the 1st row, 2 times in the 2nd row, 3 times in the 3rd row, and so on. So, a pattern is observed that the number of rows determines how many times 1 is printed in each row.

Here is the algorithm:

Run a loop for ‘ROW’ = 0 to ‘N’:
- Run a loop for ‘COL’ = 0 to equal to ‘ROW’:
  - Print 1.
- Print a new line.

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02 Approach

Here is the algorithm:

Run a loop for ‘ROW’ = 0 to ‘N’:
- Print ‘STR’.
- ‘STR’ += ‘1’
- Print a new line.

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