res[i] = stack[stack.length - 1]; // 易错点5：用at(-1)兼容性差，优先用stack.length-1
understood by beginners and advanced users alike.
，更多细节参见搜狗输入法2026
Овечкин продлил безголевую серию в составе Вашингтона09:40，详情可参考heLLoword翻译官方下载
According to research by Capital Economics, Canadian oil should remain competitively priced, even if Venezuelan production increases.。业内人士推荐同城约会作为进阶阅读
输出：[null,1,1,1,2,1,4,6]