[FEATURE]: Add solutions in JAVA for Q1 to Q10

[DugarRishab]

Description:

• To increase the variety of solutions, add only JAVA solutions of Q1 to Q10 of Leet Code.

Questions:

• Q1
• Q2
• Q3
• Q4
• Q5
• Q6
• Q7
• Q8
• Q9
• Q10

Eligibility Criteria:

• Code must be in java
• Code must have passed all the tests in Leet code. Please provide the screenshot as a proof

Note:

• Pull Requests will only be accepted from assigned people. So get yourself assigned first.

[napalion]

@DugarRishab, could you assign me? I would like do Question 9: Palindrome Number

[DugarRishab]

Hey, @napalion I will assign this to you now.

[DugarRishab]

Everyone, Following files has been added to this repo:

1. CONTRIBUTING.md
2. CODE_OF_CONDUCT.md
3. pull_request_template.md

Please go through them. And from now on, these must be strictly followed. In case of PR templates, I believe that the template will be already visible when creating a new PR.
Thank you !!

[DugarRishab]

@napalion great work!! Will continue to see your progress through out this issue.

[raginiisingh]

Hey I would like to do question 8. Can you please assign this to me @DugarRishab

[DugarRishab]

Hey @raginiisingh, I am assigning you now

[prPrashant786]

plz assign me q1 and q2

[rahul-jamwal]

Hey I would like to do question 10. Can you please assign this to me @DugarRishab

[DugarRishab]

Hey @prPrashant786 and @rahul-jamwal I will assign you this issue now.

[Ashpreetwadhwa]

hey @DugarRishab i would also like to contribute

[rahul-jamwal]

I will like to do Q3. Can you please assign that one to me? @DugarRishab

[DugarRishab]

I will like to do Q3. Can you please assign that one to me? @DugarRishab

Assigning you now. @Ashpreetwadhwa you too

[Ashpreetwadhwa]

Can do more questions.Please ??

[dhullrajat]

HIi, @DugarRishab
Bro.. Can you please assign me this issue as I am familiar with Java and would love to contribute to this repo.

[DugarRishab]

Can do more questions.Please ??

Go ahead and make your PR

[DugarRishab]

HIi, @DugarRishab Bro.. Can you please assign me this issue as I am familiar with Java and would love to contribute to this repo.

Yeah. I will assign you this issue.

[Utsab5]

Hey @DugarRishab ,
Can you assign me as well?

[DugarRishab]

Hey @Utsab5, assigning you now.

[bhawarth-garg]

hey @DugarRishab ,
can you assign me as well?
I would love to provide detailed solution for these questions

[DugarRishab]

hey @DugarRishab , can you assign me as well? I would love to provide detailed solution for these questions

Yeah, I will assign you now.

[bhawarth-garg]

please check out my PR #84 @DugarRishab