如何在 Java 8 中使用流进行回避？

如何解决如何在 Java 8 中使用流进行回避？

我有一个这样的方法，我使用普通循环进行递归：

//    example for the args: "START" "RUN" "RUN" "END" "RUN" "START" "RUN" "END" "RUN"
//    expect: listof.("START" "RUN" "RUN" "END","START" "RUN" "END")
static List<String[]> findValidCommands(String[] args,List<String[]> listCommands) {

        for (int i = 0; i < args.length; i++) {
            if (args[i].matches("START")) {
                for (int j = i + 1; j < args.length; j++) {
                    if ("END".equals(args[j])) {
                        listCommands.add(Arrays.copyOfRange(args,i,++j));
                        return findValidCommands(Arrays.copyOfRange(args,j,args.length),listCommands);
                    }
                }
            }
        }
        return listCommands;
    }

我是初学者，请帮助我使用 Stream 改进我的代码。

解决方法

Stream 逻辑无法改进代码，恰恰相反。

不过可以通过不使用嵌套循环和不使用递归来改进。

body{font-family: sans-serif;}

测试

<div>
  <p>Repeatedly click on the <b>JUMP TO THE END</b> button.</p>
  <p>In <b>Safari</b>,no <code>ended</code> event is fired unless the player is currently playing. Once the player reached the end of the audio file,no more <code>ended</code> events are generated.</p>
  <p>In <b>Chrome/Edge</b>,the <code>ended</code> event is fired only once,regardless of the player being playing or paused.</p>
  <p>In <b>Firefox</b>,the <code>ended</code> event is fired every time the button is clicked and regardless of the player being playing or paused.</p>
</div>

<audio id="demo" src="https://www.learningcontainer.com/wp-content/uploads/2020/02/Kalimba.mp3" controls></audio>

<div>
  <button id="jump">JUMP TO THE END</button>
</div>

<div id="output"></div>

输出

static List<String[]> findValidCommands(String... args) {
    List<String[]> listCommands = new ArrayList<>();
    for (int start = -1,i = 0; i < args.length; i++) {
        if (start == -1 && args[i].equals("START")) {
            start = i;
        } else if (start != -1 && args[i].equals("END")) {
            listCommands.add(Arrays.copyOfRange(args,start,i + 1));
            start = -1;
        }
    }
    return listCommands;
}