如何将字母频率代码按降序排列

This is my code so far, I am uncertain of how to make it so the output is in descending order or from highest to lowest. Any help would be very much appreciated.

这是我的代码到目前为止，我不知道如何使它，所以输出是降序或从最高到最低。任何帮助将非常感谢。

1 个解决方案

#1

You need create an List of Object array and after use the Collection.sort to sort the List of object array using the the count in descending order.

您需要创建一个Object数组列表，并在使用Collection.sort后使用降序计数对对象数组列表进行排序。

sample:

样品：

 List<Object[]> arr = new ArrayList<Object[]>();

   for (int i = 0; i < 26; i++)
   {
       Object obj[] = {capital[i], count[i]}; //add the capital and count to the List
       arr.add(obj);
   }

   Collections.sort(arr, new Comparator<Object[]>() {
        public int compare(Object[] c1, Object[] c2) {
            return (int)c2[1] - (int)c1[1]; // will sort the count in decending order
        }
    });

   for(int i = 0; i < arr.size(); i++)
       System.out.println( "CAPITAL: " + (char)arr.get(i)[0] + " "+ "COUNT: " + (int)arr.get(i)[1]); //print all the content


 }