leetcode 440. K-th Smallest in Lexicographical Order 第k個字典序的數字+作不出來

Given integers n and k, find the lexicographically k-th smallest integer in the range from 1 to n.ios Note: 1 ≤ k ≤ n ≤ 109.web Example:數組 Input: n: 13 k: 2svg Output: 10oop Explanation: The lexicogra
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