C#: Check whether a triple is presents in an array of integers or not

Last update on June 25 2025 13:02:57 (UTC/GMT +8 hours)

Check Triple in Array

Write a C# Sharp program to check if a triple is present in an array of integers or not. If a value appears three times in a row in an array it is called a triple.

Visual Presentation:

C# Sharp: Basic Algorithm Exercises - Check if a triple is presents in an array of integers or not.

Sample Solution:-

C# Sharp Code:

using System;
using System.Linq;

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

        // Method to check for consecutive triplets in an integer array
        public static bool test(int[] nums)
        {
            int arra_len = nums.Length - 1, n = 0; // Declaring variables 'arra_len' and 'n' and initializing 'arra_len' to the length of the array minus 1
            for (int i = 0; i < arra_len; i++) // Loop through the array till the second-to-last element
            {
                n = nums[i]; // Assign the value at index 'i' to 'n'
                if (n == nums[i + 1] && n == nums[i + 2]) return true; // Check if 'n' is equal to the next two consecutive elements
            }
            return false; // Return false if the condition is not met
        }
    }
}

Sample Output:

False
False
True

Flowchart:

For more Practice: Solve these Related Problems:

Write a C# program to check whether any element in the array appears at least 3 times in total.
Write a C# program to check if there exists a triple of any number that starts at an even index.
Write a C# program to detect if a triple of increasing numbers (e.g., 2,3,4) exists in the array.
Write a C# program to determine if an element appears 3 times non-consecutively in an array.

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