Two sum using java

[SuvamRoutray]

Related Issue

• Info about the related issue

Closes: #[issue number that will be closed through this PR]

Describe the changes you've made

• Their is not many changes I have made to this code it is a simple code to solve the two sum problem of leetcode

Give a clear description what modifications you have made

Mention any unusual behaviour of your code (Write NA if not)

Any unusual behaviour of your code - NA

Checklist:

(To mark, write x inside the square brackets like this: [x])

• [x] My code follows the guidelines of this project.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly whereever it was hard to understand.
• [x] My changes generate no new warnings.

Additional Info (optional)

Any additional information you want to give

• Yes please accept my PR

[kanak22]

@RayOPnub Link the issue