选择排序
public class Selection {
/**
* 选择排序
* @param arr
* @param <T>
*/
public static <T extends Comparable<? super T>> void selectionSort(T[] arr) {
for (int i = 0; i < arr.length; i++) {
int minIndex = i;
for (int j = i + 1; j < arr.length; j++) {
if (arr[j].compareTo(arr[minIndex]) < 0) {
minIndex = j;
}
}
swap(arr, i, minIndex);
}
}
//交换数组中的两个元素
public static void swap(Object[] arr, int i, int j) {
Object temp = arr[i];
arr[i] = arr[j];
arr[j] = temp;
}
//打印数组
public static <T extends Comparable<? super T>> void printArray(T[] arr) {
for (int i = 0; i < arr.length; i++) {
System.out.print(arr[i] + " ");
}
System.out.println();
}
public static void main(String[] args) {
Integer[] arr = {5, 1, 9, 7, 3, 10, 2, 8, 6, 4};
selectionSort(arr);
printArray(arr);
}
}