Liangxu Linux
Jan 3, 2022 · Fundamentals
What’s the Real Range of Tencent QQ Numbers and How Bitmap Handles Their Deduplication?
The article explains the theoretical minimum and maximum of Tencent QQ numbers, why the lower bound starts at 10001, what would happen if all IDs were exhausted, and how a bitmap can efficiently represent and deduplicate billions of QQ IDs using simple C++ code.
BitmapC++ID range
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