Java/Sorts/SelectionSort.java at master · comelf/Java · GitHub

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package Sorts;

/**

* @author Varun Upadhyay (https://github.com/varunu28)

* @author Podshivalov Nikita (https://github.com/nikitap492)

* @see SortAlgorithm

public class SelectionSort implements SortAlgorithm {

/**

* This method swaps the two elements in the array

* @param <T>

* @param arr, i, j The array for the swap and

the indexes of the to-swap elements

public <T> void swap(T[] arr, int i, int j) {

T temp = arr[i];

arr[i] = arr[j];

arr[j] = temp;

}

/**

* This method implements the Generic Selection Sort

* @param arr The array to be sorted

* Sorts the array in increasing order

**/

@Override

public <T extends Comparable<T>> T[] sort(T[] arr) {

int n = arr.length;

for (int i = 0; i < n - 1; i++) {

// Initial index of min

int min = i;

for (int j = i + 1; j < n; j++) {

if (arr[min].compareTo(arr[j]) < 0) {

min = j;

}

// Swapping if index of min is changed

if (min != i) {

swap(arr, i, min);

}

return arr;

}

// Driver Program

public static void main(String[] args) {

Integer[] arr = {4, 23, 6, 78, 1, 54, 231, 9, 12};

SelectionSort selectionSort = new SelectionSort();

Integer[] sorted = selectionSort.sort(arr);

// Output => 1 4 6 9 12 23 54 78 231

SortUtils.print(sorted);

// String Input

String[] strings = {"c", "a", "e", "b", "d"};

String[] sortedStrings = selectionSort.sort(strings);

//Output => a b c d e

SortUtils.print(sortedStrings);

}

Java/Sorts/SelectionSort.java at master · comelf/Java · GitHub

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