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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.
Why reinvent the wheel? I saw no point in trying to roll my own XML parser here.
They want the population variance (divide by
n). The larger number is the sample variance, corresponding to a denominator ofn - 1.No need to order the start and end of the
sequence. For example,1:3yields1, 2, 3whilst3:1returns3, 2, 1. Both vectors have the same sum!