C#: Smallest gap between the numbers in an array

C# Sharp Array: Exercise-37 with Solution

Write a C# Sharp program that calculates the smallest gap between numbers in an array of integers.

Sample Data:
({ 7, 5, 8, 9, 11, 23, 18 }) -> 1
({ 200, 300, 250, 151, 162 }) -> 11

Sample Solution-1:

C# Sharp Code:

using System;
using System.Linq;

namespace exercises
{
    class Program
    {
        static void Main(string[] args)
        {
            // Initializing an array of integers
            int[] nums = { 7, 5, 8, 9, 11, 23, 18 };

            // Displaying original array elements using string.Join method
            Console.WriteLine("Original array elements:");
            Console.WriteLine($"{string.Join(", ", nums)}");

            // Finding and displaying the smallest gap between the numbers in the array
            Console.WriteLine("Smallest gap between the numbers in the said array: " + test(nums));

            // Creating another array of integers
            int[] nums1 = { 200, 300, 250, 151, 162 };
            Console.WriteLine("\nOriginal array elements:");
            Console.WriteLine($"{string.Join(", ", nums1)}");

            // Finding and displaying the smallest gap between the numbers in the second array
            Console.WriteLine("Smallest gap between the numbers in the said array: " + test(nums1));
        }

        // Method to find the smallest gap between numbers in an array
        public static int test(int[] nums)
        {
            // Sorting the array in ascending order
            Array.Sort(nums);

            // Using LINQ to calculate the differences between adjacent numbers and finding the minimum difference
            return nums.Skip(1)
                       .Select((e, el) => e - nums[el])
                       .Min();
        }
    }
}

Sample Output:

Original array elements:
7, 5, 8, 9, 11, 23, 18
Smallest gap between the numbers in the said array: 1

Original array elements:
200, 300, 250, 151, 162
Smallest gap between the numbers in the said array: 11
 

Flowchart:

Sample Solution-2:

C# Sharp Code:

using System;
using System.Linq;
using System.Collections.Generic;

namespace exercises
{
    class Program
    {
        static void Main(string[] args)
        {
            // Initializing an array of integers
            int[] nums = { 7, 5, 8, 9, 11, 23, 18 };

            // Displaying original array elements using string.Join method
            Console.WriteLine("Original array elements:");
            Console.WriteLine($"{string.Join(", ", nums)}");

            // Finding and displaying the smallest gap between the numbers in the array
            Console.WriteLine("Smallest gap between the numbers in the said array: " + test(nums));

            // Creating another array of integers
            int[] nums1 = { 200, 300, 250, 151, 162 };
            Console.WriteLine("\nOriginal array elements:");
            Console.WriteLine($"{string.Join(", ", nums1)}");

            // Finding and displaying the smallest gap between the numbers in the second array
            Console.WriteLine("Smallest gap between the numbers in the said array: " + test(nums1));
        }

        // Method to find the smallest gap between numbers in an array
        public static int test(int[] nums)
        {
            // Initializing a list to store differences between adjacent numbers
            List<int> result = new List<int>();

            // Sorting the array in ascending order
            Array.Sort(nums);

            // Iterating through the sorted array to calculate differences between adjacent numbers
            for (int i = 0; i < nums.Length; i++)
            {
                // Checking if the current number is not the last element in the sorted array
                if (nums[i] != nums.Last())
                {
                    // Calculating and storing the difference between the current and next numbers
                    result.Add(nums[i + 1] - nums[i]);
                }
            }

            // Returning the minimum difference calculated
            return result.Min();
        }
    }
}

Sample Output:

Original array elements:
7, 5, 8, 9, 11, 23, 18
Smallest gap between the numbers in the said array: 1

Original array elements:
200, 300, 250, 151, 162
Smallest gap between the numbers in the said array: 11
 

Flowchart:

C# Sharp Code Editor:

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Next C# Sharp Exercise: Check specific digit in an array of numbers.