如何从文本中扫描数组中的特定数字？

Question

我有一个文本输入，我正在尝试扫描每三个数字。我只扫描每个数字，但不是特别是每隔三个数字

    Scanner inFile = new Scanner(new FileReader("budgettracker.txt"));
    int counter = 0;
    PrintWriter outFile = new PrintWriter ("textout.text");
    while(inFile.hasNextInt())
    {
        counter++;
        inFile.nextInt();
    }
    Scanner inFile1 = new Scanner(new FileReader("budgettracker.txt"));
    int a[] = new int[counter];
        for (int p = 0; p<counter; p++)
        {
            if(a[p] == a[0] || a[p] == a[3] || a[p] == a[6])
            {
            a[p] = inFile1.nextInt();
            outFile.print(a[p] + " ");
            }
        }

        outFile.close();
        inFile.close();
    }

Answer 1

我不完全确定你的意思。这是你在找什么？

int index = 0;
for (int p = 0; p<counter; p++)
{
  if(p%3 == 0) // Every third number
  {
    a[index] = inFile1.nextInt();
    outFile.print(a[index++] + " ");
  }else{
    inFile1.nextInt(); // Skip if the line isn't a multiple of 3
  }
}