C# Examples
Dave Braunschweig
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.Length; index++)
{
if (minimum > 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<int> array = new List<int>();
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
