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Thursday Code Puzzler: Investment Predictor

 Thursday is code puzzler day here at DZone. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you find suitable.

Note: Even though there really is nothing stopping you from finding a solution to this on the internet, try to keep honest, and come up with your own answer.  It's all about the participation!

Do you have code puzzlers that you'd like to share with the DZone community?  If so, please submit here. 

Investment Predictor

With an initial investment of 1,000, and a daily increase of 1%, how long would it take for the initial amount to double?

Catch up on all our previous puzzlers here.

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