what are unique 3 degits number generated from 1,2,3,4,5

Nakhia Sharma

hello sirs/madams

how to display 3 digits numbers from 5 digits 1,2,3,4,5 no digit repeats

thanks

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Laxmidhar Sahoo8y ago
Accepted answer
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace arraydigits
{
class Program
{
static void Main(string[] args)
{
int[] arr ={1,2,3,4,5};
for (int i = 0; i < arr.Length; i++)
{
for (int j = 0; j < arr.Length; j++)
{
for (int k = 0; k < arr.Length; k++)
{
if ((arr[i] != arr[j]) && (arr[i] != arr[k]) && (arr[j] != arr[k])) {
Console.Write(arr[i] + "" + arr[j] + arr[k]);
Console.WriteLine();
}
}
}
}
Console.ReadKey();
}
}
}
Nilesh Patil8y ago
Hi,

Refer below logic

https://math.stackexchange.com/questions/790114/find-the-number-of-4-digit-numbers-that-can-be-formed-using-1-2-3-4-5-if-no
Ankit Sharma8y ago
you can get a similar question here

https://stackoverflow.com/questions/18500747/how-can-we-generate-the-unique-combination-of-n-length-number-for-z-given-set-of