Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00578-w
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According to a study commissioned by Reddit and marketing intelligence company Profound, Reddit was found to be the number one most cited source across AI platforms such as Google AI Overviews and Perplexity.
Kali HaysTechnology reporter。WPS下载最新地址对此有专业解读
描述：给定字符串 num（非负整数）和整数 k，移除 k 位数字，使剩余数字最小。以字符串形式返回（不含前导零）。