I need help

题目意思是写个排序算法,需要用上isGreaterThan(); 有很多简单的算法可以选择,例如楼下的冒泡算法,选择排序也不错

package zh.codegym.task.task08.task0830; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.*; /* 有关算法的任务 */ public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String[] array = new String[20]; for (int i = 0; i < array.length; i++) { array[i] = reader.readLine(); } sort(array); for (String x : array) { System.out.println(x); } } public static void sort(String[] array) { //在此编写你的代码 for(int i=0;i<array.length;i++){ for(int j=1;j<array.length-i;j++){ if(!isGreaterThan(array[j],array[j-1])){ String tmp = array[j]; array[j] = array[j-1]; array[j-1] = tmp; } } } } // 字符串比较方法：‘a’大于‘b’ public static boolean isGreaterThan(String a, String b) { return a.compareTo(b) > 0; } }

The strings must be in alphabetical order. The sort() method must do this. (But Your sort() method is empty. (Line 25). ) Using the isGreaterThan() method.

public static void main(String[] args) {
    boolean b1 = isGreaterThan("qwe", "zxc");
    System.out.println(b1);

    System.out.println(isGreaterThan("g", "asd"));
}