如何将此 while 循环转换为 for 循环？

Question

我应该编写将 0 和 10 之间的数字乘以 2 和 10 的代码。它应该使用 for 循环。我能够想出这个作为一个while循环，但是我尝试转换的任何东西都会给我带来一堆错误。我发布的 while 代码有效，它只需要采用 for 循环格式。

while(numberCounter <= 10)
{
 byTen = numberCounter * 10;
 byTwo = numberCounter * 2;
 System.out.println(numberCounter + "\t" + byTwo + "\t" + byTen);
 numberCounter++;
 }

这是整个问题：

// NewMultiply.java - This program prints the numbers 0 through 10 along
// with these values multiplied by 2 and by 10.
// Input:  None.
// Output: Prints the numbers 0 through 10 along with their values multiplied by 2 and by 10. 

 public class NewMultiply
{
 public static void main(String args[])
 {

  String head1 = "Number: ";
  String head2 = "Multiplied by 2: ";
  String head3 = "Multiplied by 10:  ";           
  int numberCounter = 0;   // Numbers 0 through 10.
  int byTen;     // Stores the number multiplied by 10.
  int byTwo;          // Stores the number multiplied by 2.
  final int NUM_LOOPS = 10; // Constant used to control loop.

  // This is the work done in the housekeeping() method
  System.out.println("0 through 10 multiplied by 2 and by 10" + "\n");

  // This is the work done in the detailLoop() method
  // Write for loop

    // This is the work done in the endOfJob() method
            System.exit(0);
} // End of main() method.

} // End of NewMultiply class.

我想通了。非常感谢大家的帮助。问题是我有 (numberCounter

Answer 1

for 语句分为三个部分，初始化变量、结束条件和单步操作。您的代码中包含所有这些

//initialize
int numberCount = 0;
...
//end condition
while(numberCounter <= 10)
...
//next step
numberCounter++;

你只需要将它们放在你的 for 语句中，然后将 while 循环的剩余逻辑放在 for 语句之后的大括号中

Answer 2

我想出了这个，它执行我想要的，但是，它说我没有使用 for 循环？

for(numberCounter = 1; numberCounter <= 10; numberCounter++)
{
byTen = numberCounter * 10;
byTwo = numberCounter * 2;
System.out.println(numberCounter + "\t" + byTwo + "\t" + byTen);  
}