average

最新推荐文章于 2025-07-20 16:30:59 发布

原创最新推荐文章于 2025-07-20 16:30:59 发布 · 358 阅读

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package qsy;
import java.util.Scanner;
public class average {

public static void main(String[] args)
{
  String another="y";int count=0,index,num;float mean,sd;double result=0.0;
  int[] average=new int[50];
  Scanner scan=new Scanner(System.in);

  for(index=0;index<50&&another.equals("y");index++)
  {System.out.println("请输入一个数");
   average[index]=scan.nextInt();scan.nextLine();
   System.out.println("是否继续输入，是则输入y");
      another=scan.nextLine();

  }
  num=index;

  for(index=0;index<50;index++)
    {count+=average[index];}

  mean=(float)count/num;
  System.out.println("所输入的数的平均值为:"+mean);


  for(index=0;index<num;index++)
  {double square=Math.pow(average[index]-mean,2);
   result+=square;

  }

  sd=(float)Math.sqrt(result);

  System.out.println("标准方差为:"+sd);