Bangla translation

Previously, link for the lecture 22 led to lecture 21

Previously, link for the lecture 22 led to lecture 21

Change repeating link and rename

Link and Name changed

Bangla translation

Bangla translation

Arrays explained in this video can be very helpful for beginners.

Added Array video link from Harvard University [CS50]

Added Array video link at exact time

Hey, I have added a helpful reference link for HTML that I think will best add to your content and give your readers a more diverse understanding of the topic. I hope you will like this. Thank you.

Added a useful resource

Bangla translation

Replace repeating link

add ukrainian translation

update ukrainian translation up to ## Graphs

update ukrainian translation up to ### Combinatorics & Probability

update ukrainian translation up to ## Final Review

Typo on "translations"

Add Binary Heaps MIT into Heap Part

Decreased concurrency

Add back to top

Corrected two translation errors in README-cn.md file:
- Fixed translation of ''Do 2 or 3 questions regarding linked lists'' from ''关于链表的问题，请提出2或3个'' to ''请先做2或3个关于链表的问题''.
- Fixed translation of ''but how you apply the knowledge'' from ''而是因为你如何应用这些知识'' to ''而是因为你知道如何应用这些知识''.

This correction improves clarity and better aligns with the intended meaning of the original text.

Fix translation errors in README-cn.md file

fix some Arabic typos

Update README-ar.md

Add free linux commands tutorials and DevOps section

Fix PT-BR translations errors

Coding Interview Patterns is included as a recommended book to supplement learning.

Updated Python book recommendation to Coding Interview Patterns.