javase-排序

public class sort {
    public static void main(String[] args) {
        String[] arr = {"aa","bb","cc","dd"};
        System.out.println(Arrays.toString(arr));
//        sort(arr);
//        System.out.println(Arrays.toString(arr));
        Arrays.sort(arr);
        for (String string : arr) {
            System.out.print(string);
        }
    }

    private static void sort(String[] arr) {

        for (int i = 0; i < arr.length-1; i++) {
            for (int j = i+1; j < arr.length; j++) {
                String temp = arr[i];
                arr[i] = arr[j];
                arr[j] = temp;    
            }
        }
    }
}