// 易错点4：仅处理栈非空的情况，忽略栈空的情况 → 栈空时res[i]会是undefined
Colors switch from a gothic black-and-white to a grave-digging sequence flooded in a dreamy dark blue. A party sequence throbs with bisexual lighting, its dancers swirling in pinks, blues, and purples. Neon lights glitter in grimy cities, while the Bride's costume screams with colors bright yet dingy. Moods swirl with the flush of blues, yellows, reds, and greens.。业内人士推荐下载安装汽水音乐作为进阶阅读
，详情可参考搜狗输入法
Game Programming Patterns A free online book covering design patterns commonly used in game development
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