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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.
Are you sure that it is the same code?
This should happens only if the 'nums' was a char[] not a String[];
In the case of the char[] you would need to use result[i] = Character.getNumericValue(nums[i])
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