I think this Ruby solution underestimates the complexity required with huge numbers, although the .digits.first is clever! Using a mod 10 solution, like some of the solutions above, would greatly reduce the time/space complexity. brilliant.org/wiki/finding-the-las...
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I think this Ruby solution underestimates the complexity required with huge numbers, although the
.digits.firstis clever! Using a mod 10 solution, like some of the solutions above, would greatly reduce the time/space complexity. brilliant.org/wiki/finding-the-las...