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Java-based LeetCode algorithm problem solutions, regularly updated
386\. Lexicographical Numbers
Medium
Given an integer `n`, return all the numbers in the range `[1, n]` sorted in lexicographical order.
You must write an algorithm that runs in `O(n)` time and uses `O(1)` extra space.
**Example 1:**
**Input:** n = 13
**Output:** [1,10,11,12,13,2,3,4,5,6,7,8,9]
**Example 2:**
**Input:** n = 2
**Output:** [1,2]
**Constraints:**
* 1 <= n <= 5 * 104