Algorithm for finding all paths in a NxN grid

Posted by Periastron on Stack Overflow See other posts from Stack Overflow or by Periastron
Published on 2012-02-02T00:58:52Z Indexed on 2012/11/06 11:02 UTC
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algorithm

Imagine a robot sitting on the upper left hand corner of an NxN grid. The robot can only move in two directions: right and down. How many possible paths are there for the robot?

I could find solution to this problem on Google, but I am not very clear with the explanations. I am trying to clearly understand the logic on how to solve this and implement in Java. Any help is appreciated.

Update: This is an interview question. For now, I am trying to reach the bottom-right end and print the possible paths.

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