Why the best case of selection sort is O n2?

Because it treats all data sets the same and has no ability to short-circuit the rest of the sort if it ever comes across a sorted list before the algorithm is complete, insertion sort has no best or worst cases. Selection sort always takes O(n2) operations, regardless of the characteristics of the data being sorted.

Is the best case of complexity of selection sort?

n^2
Selection sort/Best complexity

Is selection sort O n?

Selection sort will run in O(n^2) regardless of whether the array is already sorted or not.

Is there a sorting algorithm with O N?

Unlike other sorting algorithms, LSD Radix Sort is non-comparative and only utilizes hashing ( O(1) amortized) and simple traversals ( O(n) ); put these two ingredients together, and you have a worst-case O(n) sorting algorithm!

What is the disadvantage of selection sort Mcq?

What is the disadvantage of selection sort? Explanation: As the input size increases, the performance of selection sort decreases. Explanation: Since the input array is not sorted, bubble sort takes 5 iterations and selection sort takes 4(n-1) iterations.

Why is selection sort not stable?

Selection Sort is not stable because it swaps non-adjacent elements. The most succinct example: Given [2, 2, 1], the ‘2’ values will not retain their initial order.

What is the best case complexity of selection sort Mcq?

What is the best case complexity of selection sort? Explanation: The best, average and worst case complexities of selection sort is O(n2).

Why is selection sort best?

The time efficiency of selection sort is quadratic, so there are a number of sorting techniques which have better time complexity than selection sort. One thing which distinguishes selection sort from other sorting algorithms is that it makes the minimum possible number of swaps, n − 1 in the worst case.

Which sorting algorithm has O N complexity?

Quicksort
Quicksort is a well-known sorting algorithm that, on average, makes O(n log n) comparisons to sort n items.

https://www.youtube.com/watch?v=pE33115510E