Package g0301_0400.s0386_lexicographical_numbers

Class Solution

java.lang.Object
g0301_0400.s0386_lexicographical_numbers.Solution
public class Solution extends java.lang.Object
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

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.util.List<java.lang.Integer>
    lexicalOrder(int n)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • lexicalOrder

      public java.util.List<java.lang.Integer> lexicalOrder(int n)