Add code for other data structures

[diptangsu]

Add code for any other data structure available.

[sudeepta14]

I want to work on this @diptangsu

[diptangsu]

@sudeepta14 feel free to fork, clone and add more files or modify existing files. Submit a PR and I'll merge it. The t-shirt will hopefully arrive before durga puja next year lol.

[Kratika28-agr]

I want to work