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）。
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The operating system often has a tool for allocating contiguous virtual，更多细节参见搜狗输入法2026
“If the USA Women’s Hockey team wants a real celebration and invite ,,, I’ll host them in Las Vegas. Do some nice dinners and shows and good times,” he wrote. “I’m sure I can get a hotel and airline to help me out here and celebrate these women for real for real.”
输入：nums1 = [4,1,2], nums2 = [1,3,4,2]