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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.
Its test cases are not written accordingy to description. It fails on case 1 of the test, where it has given 10 charachters(block walk) but its ending point is not same as starting point, as per condition the blocks walk equal to 10 and start==end, so first test case must be false irresepective of number of characters(block walk).