package com.lihan;

public class testNum {
    public Long sum(Long[] i){
        Long max=i[0];
        for(int k=0;k<i.length;k++)
        {
            if(i[k]>max)
            {
                max=i[k];
            }
        }
        return max;
    }

    /**
     * @param args
     * @author  李晗
     */
    public static void main(String[] args) {
        String[] num={"13712345671","13712345672","13712345673","13712345674","13712345675","13712345676","13712345677","13712345678"};
        Long[] j=new Long[num.length];
        for(int i=0;i<num.length;i++)
        {
            j[i]=Long.parseLong(num[i]);
        }
        testNum t=new testNum();
        Long sum=t.sum(j);
        String str=String.valueOf(sum);
        String s=num[0];
        for(int x=0;x<s.length();x++)
        {
            if(str.charAt(x)==s.charAt(x))
            {
                System.out.print(str.charAt(x));
            }
        }
        // TODO Auto-generated method stub

    }

}