386. Lexicographical Numbers LeetCode Solution | Easy Approach

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Lexicographical Numbers 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

 Self Crossing Solutions

Time: O(n)
Space: O(n)

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