Update problem-sets-competitive-programming.md

[M-SAI-SOORYA]

For Aptitude for placements exams for first round / second round purpose

What does this PR do?

Added Resource for Aptitude

Added resource for placements helping students

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For resources

Description

Why is this valuable (or not)?

How do we know it's really free?

For book lists, is it a book? For course lists, is it a course? etc.

Checklist:

• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction).
• Used an informative name for this pull request.

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

[github-actions]

Linter failed, fix the error(s):

free-programming-books/more/problem-sets-competitive-programming.md
105:1-105:17  warning  Incorrect number of blank lines between heading and section  blank-lines-1-0-2  remark-lint

[rdhyee]

Hi @M-SAI-SOORYA!

The linter is reporting a blank line error at line 105. The ### Problem Sets heading needs exactly 1 blank line after it before the first list item.

Currently you have:

### Problem Sets
* [#Aptitude GFG for PLacements]...

Should be:

### Problem Sets

* [#Aptitude GFG for PLacements]...

Please add the blank line after the heading. This should help address the linter warning.

[codeby-rhythm-sharma]

Thank you for the contribution. The update looks helpful.

[codeby-rhythm-sharma]

Thanks for the update. The change looks good.

[codeby-rhythm-sharma]

Looks good to me.

[github-actions]

'This Pull Request has been automatically marked as stale because it has not had recent activity during last 60 days 😴

It will be closed in 30 days if no further activity occurs. To unstale this PR, draft it, remove stale label, comment with a detailed explanation or push more commits.

There can be many reasons why some specific PR has no activity. The most probable cause is lack of time, not lack of interest.

Thank you for your patience ❤️'