Western Governors University (WGU) ICSC2100 C949 Data Structures and Algorithms I Practice Exam

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What does a selection sort algorithm do?

It selects the smallest element from the unsorted part for sorting

The selection sort algorithm operates by repeatedly identifying the smallest (or largest, depending on sorting order) element from the unsorted portion of the array and moving it to the sorted portion. In each iteration, it looks through the entire unsorted sub-array, finds the minimum value, and swaps it with the first unsorted element, effectively growing the sorted section of the array by one element. This process continues until the entire array is sorted.

This method is efficient in terms of simplicity and is easy to implement, despite not being the most efficient in terms of time complexity, which is O(n^2) for average and worst-case scenarios. The approach uniquely distinguishes itself from other sorting algorithms by selecting the next smallest element consistently rather than moving elements around or requiring additional arrays.

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It bubbles larger elements to the end of the array

It divides the array into two equal parts

It requires a second sorted array for processing

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