Array No of elemets

Question

//Write a program in C# Sharp to count a total number of duplicate elements in an array.

Console.WriteLine("Enter first length");

int firstlength=int.Parse(Console.ReadLine());

int[] firstarray = new int[firstlength];

int k=0;

Console.WriteLine("Enter second length");

int secondlength = int.Parse(Console.ReadLine());

int[] secondarray = new int[secondlength];

int i, j;

for (i = 0; i < firstarray.Length; i++)

{

firstarray[i] = int.Parse(Console.ReadLine());

}

i = 0;

for (j = 0; j < secondarray.Length; j++)

{

secondarray[j] = firstarray[i];

i++;

Console.WriteLine(secondarray[j]);

}

for (i = 0; i < firstarray.Length; i++)

{

for (j = 0; j < secondarray.Length; j++)

{

if (firstarray[i] == secondarray[j])

{

k++;

}

}

k = 1;

}

 

Struck here pls help