#mark

leetcode java debug 方法:

private static  void log(T ...x) {
    if (true) {
        var sb = new StringBuilder();
        int line = Thread.currentThread().getStackTrace()[2].getLineNumber() - 49;
        sb.append("L");
        sb.append(line);
        sb.append(":");
        for (T v : x) {
            sb.append(" ");
            if (v == null)
                sb.append("");
            else if (v.getClass().isInstance(new int[0]))
                sb.append(Arrays.toString((int[]) v));
            else if (v.getClass().isInstance(new boolean[0]))
                sb.append(Arrays.toString((boolean[]) v));
            else if (v instanceof ListNode)
                sb.append(((ListNode) v).val);
            else
                sb.append(v);
        }
        System.out.println(sb.toString());
    }
}

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