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Please check the challenges at http://goo.gl/bFBsm
I need someone to code all of them for me, expect the last 7 Realistic challenges.
You will need to write functions which would take input and return a true or false to indicate if the input is correct and the user has cleared the challenge. Make sure you know how to code in a secure manner as I dont want exec or anything running on my server and all the code should run in such a manner that it does not question the security of the server it self.