Loading collection data...
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.
You should condense those three "return -1" statements into just one. Also, the while loop should have an expression in there, instead of just the true keyword.
This comment is hidden because it contains spoiler information about the solution