Acing the USACO Bronze Competition MEAP V01 by copyright-2023-manning-publications.html

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Coach B: Great! Now, say we want an algorithm to sum all the numbers in an array. What will be the complexity of this algorithm?

Mei: It would need to go over all the elements of the array and sum them up. So it’s also O(N).

Coach B: Yes, correct. And if we want an algorithm that will find the smallest element in the array, and then subtract it from all the elements of the array. What is the complexity of that?

There’s a pause as the team considers this.

Annie: We’d need to go over all the elements of the array twice: once in order to find the minimum value in the array, and a second time in order to subtract it from all the elements. This means the complexity is O(2N).

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