* @return {string} 移除k位后最小的数字（字符串形式）
国产大模型 2 月霸榜 OpenRouter，MiniMax、Kimi 领跑全球 Token 调用量
。搜狗输入法2026是该领域的重要参考
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block: Writes wait until buffer space is available. Use when you trust the producer to await writes properly.
Daniel Larlham Jr.