How many cards do one need to build a house of cards with n stages?
/\ 2 cards for 1 stage
/_\ 7 cards for 2 stages
@Thomas, the Test Suite is broken. Please provide "x" or replace it with "n" in tests.
Sorry for mistake! You are right! thanks
Arrange vector in ascending order
Cody Matlab Version
Swap two numbers
Union of two set decreasing order
Divide by 4
solid of revolution
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