Consider the following correct implementation of the selection sort algorithm. public static void selectionSort(int[] elements)

{
for (int j = 0; j < elements. length - 1; j++)
{
int minIndex = j;
for (int k = j + 1; k < elements. length; k++)
{
if (elements[k] < elements[minIndex])
{
minIndex = k;
}
}
if (j != minIndex)
{
int temp = elements[j];
elements[j] = elements[minIndex];
elements[minIndex] = temp; // line 19
}
}
}
The following declaration and method call appear in a method in the same class as selectionSort.

int[] arr = {30, 40, 10, 50, 20};
selectionSort(arr);

How many times is the statement elements[minIndex] = temp; in line 19 of the method executed as a result of the call to selectionSort ?

a. 1
b. 2
c. 3
d. 4
e. 5

c. 3

Explanation:

The line of code on line 19

elements[minIndex] = temp;

will run a total of 3 times in with this call to the selectionSort method. The first time it will turn the 10 in position 2 into a 30. The second time it will turn the 20 in position 4 into a 40. Finally, it will turn the newly positioned 40 in position 4 into a 50. Therefore, completely sorting the array's elements.

the answer is d.

by: nicholas dooley

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