| | | 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.RemoveSubFoldersFromTheFilesystem; |
| | | 13 | | |
| | | 14 | | /// <inheritdoc /> |
| | | 15 | | public class RemoveSubFoldersFromTheFilesystemHashSet : IRemoveSubFoldersFromTheFilesystem |
| | | 16 | | { |
| | | 17 | | /// <summary> |
| | | 18 | | /// Time complexity - O(n * m^2) |
| | | 19 | | /// Space complexity - O(n) |
| | | 20 | | /// </summary> |
| | | 21 | | /// <param name="folders"></param> |
| | | 22 | | /// <returns></returns> |
| | | 23 | | public IList<string> RemoveSubfolders(string[] folders) |
| | 4 | 24 | | { |
| | 4 | 25 | | var result = new List<string>(); |
| | | 26 | | |
| | 4 | 27 | | var foldersHashSet = new HashSet<string>(folders); |
| | | 28 | | |
| | 46 | 29 | | foreach (var folder in folders) |
| | 17 | 30 | | { |
| | 17 | 31 | | var i = 1; |
| | 17 | 32 | | var add = true; |
| | | 33 | | |
| | 59 | 34 | | while (i < folder.Length) |
| | 49 | 35 | | { |
| | 49 | 36 | | if (folder[i] is '/' && foldersHashSet.Contains(folder[..i])) |
| | 7 | 37 | | { |
| | 7 | 38 | | add = false; |
| | | 39 | | |
| | 7 | 40 | | break; |
| | | 41 | | } |
| | | 42 | | |
| | 42 | 43 | | i++; |
| | 42 | 44 | | } |
| | | 45 | | |
| | 17 | 46 | | if (add) |
| | 10 | 47 | | { |
| | 10 | 48 | | result.Add(folder); |
| | 10 | 49 | | } |
| | 17 | 50 | | } |
| | | 51 | | |
| | 4 | 52 | | return result; |
| | 4 | 53 | | } |
| | | 54 | | } |