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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
"^" is an xor logical operator in java. You are looking for "Math.pow(double a, double b)".
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in the 7th line if I put the ending curly brace on the end of 6th line, it wont be able to complie (error: ";" expected), why?