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1. Staircase Staircase Public

   There's a staircase with N steps, and you can climb 1 or 2 steps at a time. Given N, write a function that returns the number of unique ways you can climb the staircase. The order of the steps matt…

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2. MarsRover MarsRover Public

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3. Aliennumber Aliennumber Public

   The decimal numeral system is composed of ten digits, which we represent as "0123456789" (the digits in a system are written from lowest to highest). Imagine you have discovered an alien numeral sy…

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5. Proxce Proxce Public

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6. track track Public

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