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sort1 uses: Bubble sort

How do you know?: time is low for sorted, as it should be for Omega(n), and time is high for reversed, as it should be for O(n^2)

sort2 uses: Merge sort

How do you know?: time is the same for sorted, random, and reversed, which matches with merge sort being theta(n log n) for time

sort3 uses: Selection sort

How do you know?: time is similar for sorted, random, and reversed, which matches with selection sort being theta(n^2) for time