小编J3D*_*3D1的帖子

我在一个Java程序中观察到了一些奇怪的行为.我试图尽可能地删除代码,同时仍然能够复制行为.代码全部如下.

public class StrangeBehaviour {

    static boolean recursionFlag = true;

    public static void main(String[] args) {
        long startTime = System.nanoTime();
        for (int i = 0; i < 10000; i ++) {
            functionA(6, 0);
        }
        long endTime = System.nanoTime();
        System.out.format("%.2f seconds elapsed.\n", (endTime - startTime) / 1000.0 / 1000 / 1000);
    }

    static boolean functionA(int recursionDepth, int recursionSwitch) {
        if (recursionDepth == 0) { return true; }
        return functionB(recursionDepth, recursionSwitch);
    }

    static boolean functionB(int recursionDepth, int recursionSwitch) {
        for (int i …