String数组排序,该如何解决

import java.util.ArrayList;import java.util.Arrays;import java.util.List;public class Hello {public static void main(String[] args) {String s[]={"5","a","8","12","c","b","d","c","a","b","e","f","f","8","22","a","f","e","15"};int temp=0;int a=0;String c[]={};ArrayList<String> list=new ArrayList<String>();    for(int i=0;i<s.length;i++){        list.add(s[i]);        for(int j=0;j<list.size();j++){        if(!(list.get(j)).contains("a")&&!(list.get(j)).contains("f")&&!(list.get(j)).contains("c")&&!(list.get(j)).contains("b")&&!(list.get(j)).contains("e")){            a=temp++;                        String s1=list.remove(j);        //System.out.println("次数"+a);            //System.out.println("字母"+s1);            c=s1.split("[a-z]");    Arrays.sort(c);//这里有问题for(int k=0;k<c.length;k++){System.out.println(c[k]);}}            }        }for(int k=0;k<c.length;k++){System.out.println(c[k]);}        }    }帮我看看为什么Arrays.sort()传入的数组没有进行排序，我是哪里出错了。