Goal: learn to write do-while loops. In developing an algorithm for a new fitness app, you are taske ...

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Goal: learn to write do-while loops. In developing an algorithm for a new fitness app, you are tasked with calculating the cumulative elevation gain for a 50-step stair-climbing challenge. Each step increases in height exponentially, starting from 1 meter for the first step and doubling the height increase for each subsequent step. Given long variables totalElevation and step that have already been declared, use a do-while loop to calculate the total elevation gain over 50 steps, with each step's elevation gain being twice the previous step's gain (starting from 1 meter for the first step). Store this cumulative elevation in totalElevation. For example, the elevation gain sequence starts 1, 2, 4, 8, and so on, doubling each time. Make the code as concise as possible.