冒泡排序

public class StringTest {
        //冒泡排序
    public static void main(String[] args) {
        String[] arr = { "nvc", "adf", "bcf", "cbf", "def" };
        printString(arr);
        sortString(arr);
        printString(arr);
    }
    //打印
    private static void printString(String[] arr) {
        System.out.print("{");
        for (int i = 0; i < arr.length; i++) {
            if (i!=arr.length-1) {
                System.out.print(arr[i]+" ,");
            }else{
                System.out.println(arr[i]+" }");
            }
        }
        
    }
    //排序
    public static void sortString(String[] arr) {
        for (int i = 0; i < arr.length; i++) {
            for (int j = i + 1; j < arr.length; j++) {
                if (arr[j].compareTo(arr[i])>0) {//字符串比较用compareTo方法来完成
                      swap(arr,i,j);
                }
            }
        }

    }
    //换位
    private static void swap(String[] arr, int i, int j) {
        String temp=arr[i];
        arr[i]=arr[j];
        arr[j]=temp;
    }
}