I want a program to print all combinations of given array

Question

Write a function that will print all possible combinations of the given array?? ex:- if given array is : int[] arr={12345} It should print all the combinations of elements present in the array

Karthikeyan K · Answer

Hi sir using System.IO; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Configuration; class Program { static void Main(string[] args) { int[] Arr = { 1 2 3 4 5 }; var combo = from a in Arr from b in Arr from c in Arr select string.Concat(abc); foreach (var v in combo) { Console.WriteLine(v); } Console.ReadKey(); } }

Rajeesh Menoth · Answer

Hi mysura reddy  Karthikeyan K in your output have no combination it's wrong..check that.. Here are a set of generic functions (require .net 3.5 or higher) for different scenarios. The outputs are for a list of {1 2 3 4} and a length of 2. Output: Permutations static IEnumerable > GetPermutations (IEnumerable list int length) { if (length == 1) return list.Select(t => new T[] { t }); return GetPermutations(list length - 1) .SelectMany(t => list.Where(o => !t.Contains(o)) (t1 t2) => t1.Concat(new T[] { t2 })); } Output: {12} {13} {14} {21} {23} {24} {31} {32} {34} {41} {42} {43}

Rajeesh Menoth · Answer

Hi Ref this : What is the best way to find all combinations of items in an array?