Select the sorting method in Java

public class Demo {
    public static void main(String[] args) {
        int[] arr={5,45,1,2,45,23,3,67,6,23,12,234,456,23,123,76};
        //选择法排序 效率比冒泡法高
        for (int i = 0; i <arr.length; i++) {
            int index=i;
            for (int j = i+1; j <arr.length; j++) {
                if (arr[index]>arr[j]){
                    index=j;
                }
            }
            if (index!=i){
                int temp;
                temp=arr[i];
                arr[i]=arr[index];
                arr[index]=temp;
            }

        }
        System.out.println(Arrays.toString(arr));
    }
}