如何退出两个嵌套循环? [英] How do exit two nested loops?

问题描述

我使用Java已经有一段时间了，但是我对循环的学习还是有些欠缺.我知道如何创建存在于Java中的每个循环以及如何打破循环.但是，我最近想到了这一点:

I have been using Java for quite some time, yet my education in loops is somewhat lacking. I know how to create every loop that exists in java and break out of the loops as well. However, I've recently thought about this:

说我有两个嵌套循环.我可以只使用一个break语句打破两个循环吗?

Say I have two nested loops. Could I break out of both loops using just one break statement?

这是我到目前为止所拥有的.

Here is what I have so far.

int points = 0;
int goal = 100;
while (goal <= 100) {
    for (int i = 0; i < goal; i++) {
        if (points > 50) {
           break; // For loop ends, but the while loop does not
        }
        // I know I could put a 'break' statement here and end
        // the while loop, but I want to do it using just
        // one 'break' statement.
        points += i;
    }
}

有没有办法做到这一点?

Is there a way to achieve this?

推荐答案

在Java中，您可以使用标签指定要中断/继续的循环:

In Java you can use a label to specify which loop to break/continue:

mainLoop:
while (goal <= 100) {
   for (int i = 0; i < goal; i++) {
      if (points > 50) {
         break mainLoop;
      }
      points += i;
   }
}

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