Ankit Mathur 59b7d5b866 Append more information in introduction of AVL trees. (#22425) ...

* Update index.md

Add more information in the introduction of AVL trees.

* removed extraneous word

2018-11-21 21:57:18 -06:00

..

index.md

Append more information in introduction of AVL trees. (#22425)

2018-11-21 21:57:18 -06:00