ad490a63c84a1701.js","7474","static/chunks/7474-49ba6ec3c1d01a28.js","8090","static/chunks/8090-30c82671ddf5b306.js","8115","static/chunks/8115-3670e99fee225168.js","2092","static/chunks/2092-3fbabbadb71f9617.js","3846","static/chunks/3846-54059dbba1733522.js","6517","static/chunks/6517-b17c38227fa0d2e6.js","766","static/chunks/766-12dbb05e2adf85ab.js","4150","static/chunks/app/courses/%5BcourseSlug%5D/lessons/%5BunitSlug%5D/page-1fc213a0f4568bd8.js"],"Image"] 3b:T560,using System; using System.Collections.Generic; public class Permutations { public static void Main(string[] args) { Permutations perm = new Permutations(); List> result = perm.Permute(new int[] { 1, 2, 3 }); foreach (var list in result) { Console.WriteLine(string.Join(", ", list)); } // Output: // 1, 2, 3 // 1, 3, 2 // 2, 1, 3 // 2, 3, 1 // 3, 2, 1 // 3, 1, 2 } public List> Permute(int[] nums) { List> result = new List>(); Backtrack(nums, 0, result); return result; } private void Backtrack(int[] nums, int first, List> result) { if (first == nums.Length) { List current = new List(); foreach (int num in nums) { current.Add(num); } result.Add(current); } for (int i = first; i < nums.Length; i++) { Swap(nums, first, i); // Swap numbers Backtrack(nums, first + 1, result); Swap(nums, first, i); // Swap them back to reset the state } } private void Swap(int[] nums, int i, int j) { int temp = nums[i]; nums[i] = nums[j]; nums[j] = temp; } }