Question: Prove that when using a dynamic array that grows and shrinks as in the previous exercise, the following series of 2n operations takes O(n) time:

Prove that when using a dynamic array that grows and shrinks as in the previous exercise, the following series of 2n operations takes O(n) time: n insertions at the end of an initially empty list, followed by n deletions, each from the end of the list.

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