Programming Fundamentals/Array Examples CSharp

Arrays

// This program demonstrates array processing, including:
// display, total, max, min, parallel arrays, sort,
// fixed arrays, dynamic arrays, and multidimensional arrays.

using System;
using System.Collections.Generic;

class Arrays {
    public static void Main (string[] args) 
    {
        String[] names = {"Lisa", "Michael", "Ashley", "Jacob", "Emily"};
        int[] ages = {49, 48, 26, 19, 16};

        DisplayArray(ages);

        int total = sum(ages);
        int maximum = max(ages);
        int minimum = min(ages);

        Console.WriteLine("total: " + total);
        Console.WriteLine("maximum: " + maximum);
        Console.WriteLine("minimum: " + minimum);

        DisplayParallel(names, ages);

        System.Array.Sort(ages);
        DisplayArray(ages);

        FixedArray();
        DynamicArray();
        DisplayMultidimensional();
    }

    public static void DisplayArray(int[] array) 
    {
        for (int index = 0; index < array.Length; index++) 
        {
            Console.WriteLine("array[" + index + "] = " + array[index]);
        }
    }

    public static int sum(int[] array) 
    {
        int total = 0;
        for (int index = 0; index < array.Length; index++) 
        {
            total += array[index];
        }
        return total;
    }

    public static int max(int[] array) 
    {
        int maximum = array[0];
        for (int index = 1; index < array.Length; index++) 
        {
            if (maximum < array[index]) 
            {
                maximum = array[index];
            }
        }
        return maximum;
    }

    public static int min(int[] array) 
    {
        int minimum = array[0];
        for (int index = 1; index  array[index]) 
            {
                minimum = array[index];
            }
        }
        return minimum;
    }

    public static void DisplayParallel(String[] names, int[] ages) 
    {
        for (int index = 0; index < names.Length; index++) 
        {
            Console.WriteLine(names[index] + " is " + 
                ages[index] + " years old");
        }
    }

    public static void FixedArray() 
    {
        int[] array = new int[5];

        Random random = new Random();
        for (int index = 0; index < array.Length; index++) 
        {
            int number = random.Next(0, 100);
            array[index] = number;
        }
        DisplayArray(array);
    }

    public static void DynamicArray() 
    {
        List array = new List();

        Random random = new Random();
        for (int index = 0; index < 5; index++) 
        {
            int number = random.Next(0, 100);
            array.Add(number);
        }
        for (int index = 0; index < array.Count; index++) 
        {
            Console.WriteLine("array[" + index + "] = " + array[index]);
        }
    }

    public static void DisplayMultidimensional() 
    {
        String[,] game = new String[,] 
        {
            {"X", "O", "X"}, 
            {"O", "O", "O"}, 
            {"X", "O", "X"} 
        };

        for (int row = 0; row < 3; row++) 
        {
            for (int column = 0; column < 3; column++) 
            {
                Console.Write(game[row, column]);
                if (column < 2) 
                {
                    Console.Write(" | ");
                }
            }
            Console.WriteLine();
        }
    }
}

Output

array[0] = 49
array[1] = 48
array[2] = 26
array[3] = 19
array[4] = 16
total: 158
maximum: 49
minimum: 16
Lisa is 49 years old
Michael is 48 years old
Ashley is 26 years old
Jacob is 19 years old
Emily is 16 years old
array[0] = 16
array[1] = 19
array[2] = 26
array[3] = 48
array[4] = 49
array[0] = 65
array[1] = 45
array[2] = 78
array[3] = 32
array[4] = 4
array[0] = 24
array[1] = 62
array[2] = 97
array[3] = 40
array[4] = 82
X | O | X
O | O | O
X | O | X

References

• cnx.org: Programming Fundamentals – A Modular Structured Approach using C++

Programming Fundamentals