в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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2010-05-26T12:15:50Z

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==Array sizes and dimensions.==

<source lang="csharp">using System;
class MainClass {
public static void PrintArray(int[] arr) {
for (int i = 0; i < arr.Length; ++i)
Console.WriteLine("OneDArray Row {0} = {1}", i, arr[i]);
}
public static void PrintArrayRank(int[,] arr) {
Console.WriteLine("PrintArrayRank: {0} dimensions", arr.Rank);
}

public static void Main() {
int[] x = new int[10];
for (int i = 0; i < 10; ++i)
x[i] = i;
PrintArray(x);
int[,] y = new int[10, 20];
for (int k = 0; k < 10; ++k)
for (int i = 0; i < 20; ++i)
y[k, i] = i * k;
PrintArrayRank(y);
}
}</source>

==Defining the Array Size at Runtime==

<source lang="csharp">class MainClass
{
static void Main()
{
string[] groceryList;
System.Console.Write("How many items on the list? ");
int size = int.Parse(System.Console.ReadLine());
groceryList = new string[size];
}
}</source>

==Use the GetLength() method to get number of elements in each dimension of the two dimensional array==

<source lang="csharp">using System;
class MainClass
{
public static void Main()
{
string[,] names = {
{"J", "M", "P"},
{"S", "E", "S"},
{"C", "A", "W"},
{"G", "P", "J"},
};
int numberOfRows = names.GetLength(0);
int numberOfColumns = names.GetLength(1);
Console.WriteLine("Number of rows = " + numberOfRows);
Console.WriteLine("Number of columns = " + numberOfColumns);
}
}</source>
<pre class=codeResult>Number of rows = 4
Number of columns = 3</pre>

==Use the Length array property==

<source lang="csharp">using System;

class MainClass {
public static void Main() {
int[] nums = new int[10];

Console.WriteLine("Length of nums is " + nums.Length);

Console.Write("use Length to initialize nums");
for(int i=0; i < nums.Length; i++)
nums[i] = i * i;

Console.Write("now use Length to display nums");
Console.Write("Here is nums: ");
for(int i=0; i < nums.Length; i++)
Console.Write(nums[i] + " ");
}
}</source>
<pre class=codeResult>Length of nums is 10
use Length to initialize numsnow use Length to display numsHere is nums: 0 1 4 9 16 25 36 49 64 81 "</pre>

==Use the Length array property on a 3-D array==

<source lang="csharp">using System;

class MainClass {
public static void Main() {
int[,,] nums = new int[10, 5, 6];

Console.WriteLine("Length of nums is " + nums.Length);

}
}</source>
<pre class=codeResult>Length of nums is 300</pre>

==Using Length - 1 in the Array Index==

<source lang="csharp">class MainClass
{
static void Main()
{
string[] languages = new string[9];
languages[4] = languages[languages.Length - 1];
}
}</source>

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в 15:31, 26 мая 2010

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