for (let i = left; i <= right; i++) {
Less Than (2): Everything in this space must be less than 2. The answer is 1-3, placed horizontally.，详情可参考搜狗输入法2026
// 倒序遍历2*len-1次：模拟数组循环（核心！易错点1），推荐阅读WPS下载最新地址获取更多信息
def _extract_text(node) - str:。heLLoword翻译官方下载对此有专业解读