﻿ C# - First 4 elements must be equal in an array of integers

# C#: Check whether one of the first 4 elements in an array of integers is equal to a given element

## C# Sharp Basic Algorithm: Exercise-33 with Solution

Write a C# Sharp program to check whether one of the first 4 elements in an array of integers is equal to a given element.

Visual Presentation:

Sample Solution:-

C# Sharp Code:

``````using System;
using System.Linq;

// Namespace declaration
namespace exercises
{
// Class declaration
class Program
{
// Main method - entry point of the program
static void Main(string[] args)
{
// Calling the 'test' method with different arrays and integer inputs
Console.WriteLine(test(new[] {1,2,9,3}, 3));    // Output: True
Console.WriteLine(test(new[] {1,2,3,4,5,6}, 2));// Output: True
Console.WriteLine(test(new[] {1,2,2,3}, 9));   // Output: False
Console.ReadLine(); // Keeping the console window open
}

// Method to check if an integer array contains a specific integer 'n' in the first 4 elements
public static bool test(int[] numbers, int n)
{
// Using a ternary operator to check if the length of 'numbers' is less than 4
// If the length of 'numbers' is less than 4, use 'Contains' to check if 'n' is present in 'numbers'
// Otherwise, use 'Take(4)' to consider only the first 4 elements of 'numbers' and check if 'n' is present
return numbers.Length < 4 ? numbers.Contains(n) : numbers.Take(4).Contains(n);
}
}
}
```
```

Sample Output:

```True
True
False```

Flowchart:

C# Sharp Code Editor:

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