类与对象 用类来描述游戏角色的交手次数、经验值、生命值之间的关系，并断定角色决斗的胜负。

import static java.lang.System.*;
class Fight_game{
    public int jiaoshou;
    public int shengming;
    public int jingyan;
    public String name;
//   初始化二角色 
    Fight_game(String na){
        shengming=1000;
        jingyan=0;
        jiaoshou=0;
        name=na;
    }
  
    int fight(int fight_num,int people){
        int p1=people;
        for(int i=0;i<fight_num;i++){
         jiaoshou=jiaoshou+1;
         if(p1==1){ shengming-=1;jingyan+=2; }
         else{
           shengming-=2;jingyan+=3;
         }            
        }    
        return shengming;
    }
    
}

public class Experiment_four {
    public static void main(String args[]){