选择排序

public static void selectionSort(int[] arr){
        for (int i = 0; i < arr.length; i++) {
            int min = arr[i];
            for(int j = i; j < arr.length; j++){
                if(arr[j] < min){
                    int temp = arr[j];
                    arr[j] = min;
                    min = temp;
                }
            }
            arr[i] = min;
        }
}