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.
Massive help, thanks for that.
that does read a lot better than the original yeah
Let's try to rephrase a bit:
Given
find the year, Y, in which the father will be (if Y is in the future) or was (if Y is in the past) twice the age of his son.
Return the difference between Y and the current year.
this absolutely needs to be rephrased in some way, the description is completely useless for solving the kata, it's asking the wrong question