C# Example: The Minimum and Maximum Values in an Array

	C# Example: The Minimum and Maximum Values in an Array

Introduction

This series of sample programs shows how to find the highest number in a series. In these examples, we will deal with arrays. We will use single and multi-dimensional.

In the first example, we create a simple array of double-precision numbers (the numbers were selected randomly). To look for the lowest or the highest number in the range, we use a for loop:

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

namespace Exercise

{
    public class Program
    {
        static int Main(string[] args)
        {
            var Numbers = new double[10];
            var Minimum = 0D;
            var Maximum = 0D;

            Numbers[0] = 4478.72;
            Numbers[1] = 67.97;
            Numbers[2] = 2.32;
            Numbers[3] = 13004.05;
            Numbers[4] = 0.44;
            Numbers[5] = 873846.08;
            Numbers[6] = 120.12;
            Numbers[7] = 479.23;
            Numbers[8] = 12.42;
            Numbers[9] = 873846.04;

            Minimum = Numbers[0];

            for (var i = 0; i < Numbers.Length; i++)
            {
                Console.WriteLine("Number {0,2}:{1, 10}", i + 1, Numbers[i]);
            }


            for (var i = 0; i < Numbers.Length; i++)
            {
                if (Minimum > Numbers[i])
                    Minimum = Numbers[i];
            }
            
            Console.WriteLine();
            Console.WriteLine("Minimum = {0}", Minimum);

            for (int i = 0; i < Numbers.Length; i++)
            {
                if (Maximum < Numbers[i])
                    Maximum = Numbers[i];
            }

            Console.WriteLine("Maximum = {0}\n", Maximum);
            return 0;
        }
    }
}

This example uses a two-dimensional array to find the largest and the lowest values in the series:

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

namespace Exercise
{
    public class Program
    {
        static int Main(string[] args)
        {
            var Numbers = new double[2, 5];
            var Minimum = 0D;
            var Maximum = 0D;

            Numbers[0, 0] = 67.97;
            Numbers[0, 1] = 873846.04;
            Numbers[0, 2] = 2.32;
            Numbers[0, 3] = 4478.72;
            Numbers[0, 4] = 13004.05;
            Numbers[1, 0] = 479.23;
            Numbers[1, 1] = 873846.08;
            Numbers[1, 2] = 0.44;
            Numbers[1, 3] = 12.42;
            Numbers[1, 4] = 120.12;

            Minimum = Numbers[0, 0];

            int counter = 1;

            for (int i = 0; i < 2; i++)
            {
                for (int j = 0; j < 5; j++)
                {
                    Console.WriteLine("Number {0}:\t{1}", counter, Numbers[i, j]);
                    counter++;
                }
            }

            for (int i = 0; i < 2; i++)
            {
                for (int j = 0; j < 5; j++)
                {
                    if (Minimum > Numbers[i, j])
                        Minimum = Numbers[i, j];
                }
            }
            Console.WriteLine();
            Console.WriteLine("Minimum = {0}", Minimum);

            for (int i = 0; i < 2; i++)
            {
                for (int j = 0; j < 5; j++)
                {
                    if (Maximum < Numbers[i, j])
                        Maximum = Numbers[i, j];
                }
            }

            Console.WriteLine("Maximum = {0}", Maximum);
            return 0;
        }
    }
}


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