Interview question

[yoyota]

You are standing on the middle of a East-West street. A row of closed doors in front of you, and you have a key on hand which can only open one specific door. Compose a strategy so that X/N is least under the worst situation. X is the distance you covered when arriving at the correct door. N is the distance between the door and the original point.

 

[pratikpoddar]

Very interesting problem. Thank You. Interesting discussion on the blog: http://pratikpoddarcse.blogspot.com/2012/01/lazy-walking-strategy-puzzle.html