Analasys程序max和min以及模式和图形直方图

时间:2018-05-30 23:09:49

标签: java arrays methods

您好,在我的程序中,我想显示数组中的平均数,最大数,最小数和模式。到目前为止,只有我的平均作品和我的min和max方法都是我输入的第一个数字。例如,如果我说我要输入3个数字并且我输入12,15和6.最小值和最大值都将输出12,因为它是输入的第一个数字,这是错误的所以请帮忙。这是我的代码。

    int amount;
    System.out.println(" Enter the amount of numbers you would like to enter: ");
    amount = scan.nextInt();

    int [] arr = new int [amount];
    int outcome = 1;

    for (int i = 0; i < arr.length; i++){
        System.out.println("Enter a number 1 through 50");
        outcome = scan.nextInt();
        arr [i] = outcome;

    }

    System.out.println(" ");

    System.out.println( " The average is" ); 
    System.out.println(average(arr));
    System.out.println(" ");

    System.out.println( " The lowest value in the array is " ); 
    System.out.println(min(arr));
    System.out.println(" ");

    System.out.println( " The largest value in the array is " ); 
    System.out.println(max(arr));
    System.out.println(" ");


}





public static double average ( int [] arr) {

    double sum = 0;
    int value = arr.length;
    for ( int i = 0; i < arr.length; i++){
        sum += arr [i];
    }
    sum = sum / value;
    return sum;



}

public static int min (int [] arr) {
        int shortest = 0;
        int smallest = 100;
        int length = arr.length;

     for ( int i = 0; i < arr.length; i ++ ) {
        if ( length < smallest)
        shortest += arr[i];
        smallest = arr.length;
     }

       return shortest;
   }

public static int max (int [] arr) {
    int largest = 0;
    int biggest = 0;
    int length = arr.length;

 for ( int i = 0; i < arr.length; i ++ ) {
    if ( length >  largest)
    biggest += arr[i];
    largest = arr.length;
 }

   return biggest;

}

}

1 个答案:

答案 0 :(得分:0)

这非常简单。你的min和max方法返回12的原因是因为你设置了arr.length的最大值和最小值,因此在一次运行后立即停止for循环。此外,这种问题的实现要容易得多。尝试沿着这些方向做点什么:

public int getMax(int[] arr)
{
  int max = arr[0];  //To have a baseline
  for(int i = 1; i < arr.length; i++)
  {
    if(arr[i] > max)
    {
      max = arr[i];
    }
  }
  return max;
}

public int getMin(int[] arr)
{
  int min = arr[0];  //To have a baseline
  for(int i = 1; i < arr.length; i++)
  {
    if(arr[i] < min)
    {
      min = arr[i];
    }
  }
  return min;
}

这更易读,更容易执行。只要问你是否有任何问题: - )