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Hacker Rank: 2D Array - DS Solution

I've been trying to solve the puzzles on HackerRank.com lately. This post is just to solve the problem in Arrays section of Hacker Rank

I feel better to solve the problems though. It certainly improves some area in programming language.

As I'm a C# developer the problem is solved using C# as programming language.

Question: https://www.hackerrank.com/challenges/2d-array

And the solution is

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