Updating Readme.md File

Create LICENSE.md

Updating Readme.md

Updating Readme.md File

Merge pull request #7 from VishalSingh-07/notes

Adding Section 15 - Trees

Adding Section 14 - Queues

Adding Section 13 - Stack

Adding Section 12 - Sparse Matrix and Polynomial using LinkedIn List

Adding Section 11 - Linked Lists

Section 10 - Sparse Matrix and Polynomial Representation

Adding Section 9 - Matrices

Adding Section 8 - Strings

Adding Section 7 - Array ADT

Adding Section 6 - Array Representations