| | | 1 | | // -------------------------------------------------------------------------------- |
| | | 2 | | // Copyright (C) 2025 Eugene Eremeev (also known as Yevhenii Yeriemeieiv). |
| | | 3 | | // All Rights Reserved. |
| | | 4 | | // -------------------------------------------------------------------------------- |
| | | 5 | | // This software is the confidential and proprietary information of Eugene Eremeev |
| | | 6 | | // (also known as Yevhenii Yeriemeieiv) ("Confidential Information"). You shall not |
| | | 7 | | // disclose such Confidential Information and shall use it only in accordance with |
| | | 8 | | // the terms of the license agreement you entered into with Eugene Eremeev (also |
| | | 9 | | // known as Yevhenii Yeriemeieiv). |
| | | 10 | | // -------------------------------------------------------------------------------- |
| | | 11 | | |
| | | 12 | | namespace LeetCode.Algorithms.RemoveDuplicatesFromSortedArray2; |
| | | 13 | | |
| | | 14 | | /// <inheritdoc /> |
| | | 15 | | public class RemoveDuplicatesFromSortedArray2TwoPointers : IRemoveDuplicatesFromSortedArray2 |
| | | 16 | | { |
| | | 17 | | /// <summary> |
| | | 18 | | /// Time complexity - O(n) |
| | | 19 | | /// Space complexity - O(1) |
| | | 20 | | /// </summary> |
| | | 21 | | /// <param name="nums"></param> |
| | | 22 | | /// <returns></returns> |
| | | 23 | | public int RemoveDuplicates(int[] nums) |
| | 2 | 24 | | { |
| | 2 | 25 | | if (nums.Length <= 2) |
| | 0 | 26 | | { |
| | 0 | 27 | | return nums.Length; |
| | | 28 | | } |
| | | 29 | | |
| | 2 | 30 | | var left = 2; |
| | | 31 | | |
| | 26 | 32 | | for (var right = 2; right < nums.Length; right++) |
| | 11 | 33 | | { |
| | 11 | 34 | | if (nums[right] == nums[left - 2]) |
| | 3 | 35 | | { |
| | 3 | 36 | | continue; |
| | | 37 | | } |
| | | 38 | | |
| | 8 | 39 | | nums[left] = nums[right]; |
| | | 40 | | |
| | 8 | 41 | | left++; |
| | 8 | 42 | | } |
| | | 43 | | |
| | 2 | 44 | | return left; |
| | 2 | 45 | | } |
| | | 46 | | } |