implement the bubble sort algorithm on the following arraylist

1import java.util.ArrayList;
2
3public class Sort{
4    private static ArrayList<String> list = new ArrayList<String>();
5
6    public static ArrayList<String> sortByName(String [] input) {
7        String temp;
8        for (int i=0; i< input.length; i++){
9            for(int j= i; j< input.length-1; j++){
10                char first = input[i].charAt(0);
11                char sec = input[j +1].charAt(0);
12                 if (first < sec)  {
13                     temp = input[j +1];
14                     input[j +1] = input[i];        
15                     input[i] = temp;
16                 }
17             }
18            list.add(input[i]);
19         }
20
21        return list;
22    }
23
24    public static void main(String[] args) {
25        String string[] =  {"Ezen", "Allen" , "Wilker", "Kruden", "Crocket"};
26        bubbleSortByName(string);
27    }
28}