C# Sharp Exercises: Print all unique elements of an array

C# Sharp Array: Exercise-6 with Solution

Write a program in C# Sharp to print all unique elements in an array.

Sample Solution:-

C# Sharp Code:

using System;
public class Exercise6
{
    public static void Main()
{
    int  n,ctr=0;
	int[] arr1 = new int[100];
    int i, j, k;
       Console.Write("\n\nPrint all unique elements of an array:\n");
       Console.Write("------------------------------------------\n");	
       Console.Write("Input the number of elements to be stored in the array :");
	   n = Convert.ToInt32(Console.ReadLine()); 	   
       Console.Write("Input {0} elements in the array :\n",n);
       for(i=0;i<n;i++)
            {
	      Console.Write("element - {0} : ",i);
          arr1[i] = Convert.ToInt32(Console.ReadLine()); 		  
	    }
    	/*Checking duplicate elements in the array */
    	Console.Write("\nThe unique elements found in the array are : \n");
    	for(i=0; i<n; i++)
    	{
        ctr=0;
		/*Check duplicate bifore the current position and
		increase counter by 1 if found.*/
        for(j=0; j<i-1; j++)
        {
            /*Increment the counter when the seaarch value is duplicate.*/
            if(arr1[i]==arr1[j])
            {
                ctr++;
            }
        }
        /*Check duplicate after the current position and
		  increase counter by 1 if found.*/
       	for(k=i+1; k<n; k++)
        {
            /*Increment the counter when the seaarch value is duplicate.*/
            if(arr1[i]==arr1[k])
            {
                ctr++;
            }
		     /* Duplicate numbers next to each other*/
            if(arr1[i]==arr1[i+1])
            {
                i++;
            }
        }
		 /*Print the value of the current position of the array as unique value
			when counter remain contains its initial value.*/
       	if(ctr==0)
        {
          Console.Write("{0} ",arr1[i]);
        }
    }
       Console.Write("\n\n");
  }
}

Sample Output:

Print all unique elements of an array:
------------------------------------------
Input the number of elements to be stored in the array :2
Input 2 elements in the array :
element - 0 : 2
element - 1 : 4

The unique elements found in the array are : 
2 4

Flowchart:

C# Sharp Code Editor:

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