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Tools / Data structures Interview questions

Explain selection sort algorithm.

List is divided into two parts, the sorted part at the left end and the unsorted part at the right end. It selects the smallest element from unsorted sub-list and places it into the sorted list. This iterates unless all the elements from unsorted sub-list are consumed into sorted sub-list.

This algorithm is not suitable for large data sets as its average and worst case complexities are of Ο(n2), where n is the number of items.

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