Algorithms · Question 7 · Medium
What is the maximum number of swaps selection sort performs on an array of n elements?
- n
- n - 1
- n(n - 1) / 2
- log2 n
Answer and explanation
Answer: B. n - 1
Explanation: Selection sort does at most one swap per pass to place the minimum of the unsorted part, and there are n - 1 passes. That is why it is useful when writes are costly.
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