Create DuplicateBrackets.java

[sharduln30]

1. You are given a string exp representing an expression.
2. Assume that the expression is balanced i.e. the opening and closing brackets match with each other.
3. But, some of the pair of brackets maybe extra/needless.
4. You are required to print true if you detect extra brackets and false otherwise.

e.g.'
((a + b) + (c + d)) -> false
(a + b) + ((c + d)) -> true

Describe your change:

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

References

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Java files are placed inside an existing directory.
• All filenames are in all uppercase characters with no spaces or dashes.
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• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.