How to convert int array to int?

Question

What I would like to learn how to do is to convert an int array to an int in C#.

However I want to append the int with the values from the array.

Example:

Answer 1

This will do it:

public int DoConvert(int[] arr)
{

  int result = 0;

  for (int i=0;i<arr.Length;i++)
    result += arr[i] * Math.Pow(10, (arr.Length-1)-i);

  return result; 
}

Answer 2

Use this code you just want to concatenate you int array so use the following code

String a;
int output;
int[] array = {5, 6, 2, 4};
foreach(int test in array)
{
a+=test.toString();
}
output=int.parse(a);
//where output gives you desire out put

This is not an exact code.

Answer 3

int result = 0;
int[] arr = { 1, 2, 3, 4};
int multipicator = 1;
for (int i = arr.Length - 1; i >= 0; i--)
{
   result += arr[i] * multipicator;
   multipicator *= 10;
}

Answer 4

Try the following:

        int[] intArray = new int[] { 5, 4, 6, 1, 6, 8 };

        int total = 0;
        for (int i = 0; i < intArray.Length; i++)
        {
            int index = intArray.Length - i - 1;
            total += ((int)Math.Pow(10, index)) * intArray[i];
        }

Answer 5

And just for fun...

arr.Select((item, index) => new { Item = item, Power = arr.Length - (index - 1) }).ToList().ForEach(item => total += (int)(Math.Pow(10, item.Power) * item.Item));

Answer 6

var finalScore = int.Parse(array
    .Select(x => x.ToString())
    .Aggregate((prev, next) => prev + next));