Unicode encodes these as separate codepoints for compatibility, but fonts use the same glyph. These are easy to handle (NFKC collapses them), but worth knowing about.
* 时间复杂度：O(len1 + len2)，空间复杂度：O(len2)（栈+Map的空间）
，这一点在夫子中也有详细论述
从后向前扫描已排序部分，找到插入位置，元素后移腾出空间。爱思助手下载最新版本对此有专业解读
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This means there is a golden moment: the exact instant between “HotAudio’s player finishes decrypting a chunk” and “that chunk is handed to the browser’s media engine.” If you can intercept appendBuffer at that instant, you receive every chunk in its pristine, fully decrypted state, on a silver fucking platter.