掃描儀不能讀取最後一個號碼

Question

請原諒我，如果程序很混亂或難以理解，我在趕時間。無論如何，我有這個程序應該得到一組數字的平均值，中位數和模式。出於某種原因，程序讀取除了每行最後一個數字之外的所有數字。
示例輸入：

3 
1 2 3 3      //doesn't read the last number "3" 
10 10 10 10 10 10 10 10 10 10 //doesn't read the last number "10" 
2 3 4 5 5 9 8 7 5 5 3 2 1  //doesn't read the last number "1" 

輸出示例：

mean median mode 
2.3 2.5 3.0 
10.0 10.0 10.0 
4.5 5.0 5.0 

    public class Mean  
{  
    public static void main(String[] args) throws IOException  
    {  
     out.print("\f");   
     Scanner scan = new Scanner (new File ("mean.dat"));  
     DecimalFormat deci = new DecimalFormat("##.0");  
     String x = scan.nextLine();  
     double mean = 0, median = 0, mode = 0;  
     String numbers;  
     String[] nums;  
     double[] num;  
     double sum = 0;  
     int y;  
     double mid;  
     int count2;  
     int HighestCount = 0;  
     int p;  
     out.println("mean median mode");  
     while (scan.hasNext())  
     {  
      mean = 0.0;  
      median = 0.0;  
      mode = 0.0;  
      HighestCount = 0;  
      sum = 0.0;  
      numbers = scan.nextLine();  
      nums = numbers.split("[ ]");  
      double l = nums.length;  
      num = new double[(int)l];  
      for (p = 0; p < l - 1; p++)  
      {  
       num[p] = Double.parseDouble(nums[p]);  
       sum += num[p];  
      }  
      mean = (sum/l);  
      Arrays.sort(num);  
      mid = l/2.0;  
      mid = Math.round(mid);  
      if (l%2 == 1)  
      {  
       median = (num[(int)mid]);  
      }  
      else  
      {  
       median = ((num[((int)mid) + 1] + num[((int)mid)])/2.0);  
      }  

     for (int i = 0; i < l; ++i)  
     {  
      count2 = 0;  
      for (int j = i; j < l; ++j)  
      {  
       double z = num[i];  
       double zz = num[j];  
       int d = (int)z;  
       int f = (int)zz;  
       if (d == f)  
        ++count2;  
      } 
      if (count2 > HighestCount)  
      { 
       HighestCount = count2; 
       mode = num[i]; 
      } 
      else if (count2 == HighestCount) 
      { 
       mode = num[i]; 
      } 
     } 
     out.printf("%4.1f \t %4.1f \t %4.1f", mean, median, mode); 
     out.println(); 
    } 
} 
} 

Answer 1

出於某種原因，程序讀取的所有數值，除了在每一個行中的最後一個 。

從

for (p = 0; p < l - 1; p++) {// It skip last one  
    num[p] = Double.parseDouble(nums[p]); 
    .............. 
} 

更改您的for循環

for (p = 0; p < l; p++) { //Use l insted of l-1 
    num[p] = Double.parseDouble(nums[p]); 
    .............. 
}