java 編程 之【評分系統】可以計算平均成績和最爛評委

 

/**
 *
 * @author: Kevin
 * @date :2011-07-18
 * @function: to mark 0-10 point to Players,and the result is delete the highest
 * and the lowest, at last reserve the average marks.
 */
package com.Homework;

import java.util.Scanner;

public class MarkSystem {

 //main method
 public static void main(String[] args) {

  Voter  voter= new Voter();  
  System.out.println("The last mark is ："+voter.lastMark());
  System.out.println("The Worst Judger is No.："+voter.getWorst());
 }

}

//-------------------------------------------

//create class Player
class Voter
{
 private float[] mark =null;
 private int size = 8;
 

 //constructor
 public Voter()
 {
  Scanner s= new Scanner(System.in);
  System.out.println("請輸入參加評審人數（3人以上）：");
  size = s.nextInt();
  mark= new float[size];

  for (int i=0 ;i<size;i++)
  { 
   System.out.println("input the NO."+(i+1)+"Judger'mark");
   mark[i]=s.nextFloat();
  }

 }
 
 public float lastMark()
 { 
  float lastMark= 0 ;
  int minIndex =this.getLowMarkIndex();
  int maxIndex =this.getHigMarkIndex();
  for (int i=0 ;i<size;i++)
  { 
   if(i!=minIndex&&i!=maxIndex)
   {
    lastMark += mark[i];
   }
  }
  return lastMark/(size-2);
 }
 //取得最低分的編號

 public int getLowMarkIndex()
 {
  float lowMark = mark[0];
  int lowIndex = 0;
  
  for (int i=0 ;i<size;i++)
  {
   if(lowMark>mark[i])
   {
    lowMark = mark[i];
    lowIndex = i;
   }
  }
  return lowIndex;
  
 }
 //取出最高分的編號
 public int getHigMarkIndex()
 {
  float higMark = mark[0];
  int higIndex = 0;
  
  for (int i=0 ;i<size;i++)
  {
   if(higMark<mark[i])
   {
    higMark = mark[i];
    higIndex = i;
   }
  }
  return higIndex;
  
 }
 //取出最爛評委的編號

 public int getWorst()
 { float lastMark = this.lastMark();
 
  int worstIndex = 0;
  float cha =Math.abs(mark[0]- lastMark) ;
  float cha2=0f;
  for (int i=0 ;i<size;i++)
  {
   cha2 = Math.abs(mark[i]- lastMark) ;
   if(cha<cha2)
   {
    worstIndex= i;
   }
  }
  return worstIndex+1;
 }
}