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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.
I don't see any problem when trying a few solutions so I don't understand what happened. It is not a problem of the kata. 167 guys passed the Java kata. Your solutions for the two tests are correct. Usually the [] show where the answers differ. Maybe you should try again. Tell me if it doesn't work.
Using Java I am getting the correct output (It looks like) but I'm not passing the test.
Here are just tests 1 and 2 (but they're all like this)
test1(PiApproxTest)
✘ expected:<[10, 3.0418396189[]]> but was:<[10, 3.0418396189[]]>
test2(PiApproxTest)
✘ expected:<[100, 3.1315929036[]]> but was:<[100, 3.1315929036[]]>
As you can see the numbers are all correct, but I have no idea what's going on.