如何将数组写入文件呢？

实现思路: 
    遍历数组，然后使用IO流的操作方式
	将数组值写入到文件中

 public static void write (String filename, int[] arrs) throws IOException{
  BufferedWriter outputWriter = null;
  outputWriter = new BufferedWriter(new FileWriter(filename));
  for (int i = 0; i < arrs.length; i++) {
    
    outputWriter.write(arrs[i]+"");
    // 或
    outputWriter.write(Integer.toString(arrs[i]);
    outputWriter.newLine();
  }
  outputWriter.flush();  
  outputWriter.close();  
}