选择排序java实现

package text.algorithm;

/**
 * 选择排序
 * O(n^2);空间复杂度O(1);
 */
public class SelectionSort {

    public static void selectionSort(int[] a) {
        for (int i = 0; i < a.length; i++) {
            int k = a[i];
            for (int j = i+1; j < a.length; j++) {
                if(k>a[j]){
                    int b = k;
                    k = a[j];
                    a[j]=b;
                }
            }
            a[i]=k;
        }
        for (int i = 0; i < a.length; i++) {
            System.out.print(a[i]+",");
        }
    }

    public static void main(String[] args) {
        int[] a = {1,23,43,56,34,12,56,7,87,-56,34,2};
        selectionSort(a);
    }
}