Files for some codes are missing

[richa208]

This is a(n):

• [ ] New feature proposal
• [ ] Reporting a keyword
• [x] Error
• [ ] Proposal to the Search Engine
• [ ] Other

Details:

In some cases not all the codes available in the github repository are being displayed in the web page. Like for selection_algorithms, quickselect codes are not shown when we search for selection_algorithms.

[richa208]

I would like to work if this sounds essential.