C # common algorithms: Arrays

The C # array concept has been thoroughly object-oriented, which has greatly reduced the difficulty of using our array structure, and it has been supported. NET platform's garbage collection mechanism. As the C # version continues to update, new data structures derived from the array are increasing. According to the 28 principle, we only need to use 20% of them to solve the 80% problem. But in order to achieve the ultimate, we still need to understand them. This article summarizes some of the array-related data structures and their usage until C # (4.0).

Basic array

string[] fruit = new String[5];  
string[] vegetable = new string[] {"Chinese cabbage", "pepper", "potato", "tomato", "broccoli"};  
Fruit[0] = "orange";  
FRUIT[1] = "banana";  
FRUIT[2] = "Apple";  
FRUIT[3] = "Grape";  
FRUIT[4] = "Lychee";

Multidimensional arrays

string[,] monthplan=new string[30,7];  
Monthplan[0,0]= "A";  
Monthplan[0, 1] = "B";

Jagged array

string[][] Foodenum = new string[7][];  
Foodenum[0] = new STRING[10];  
FOODENUM[1] = new string[9];  
FOODENUM[2] = new String[8];  
FOODENUM[3] = new String[7];  
FOODENUM[4] = new String[6];  
FOODENUM[5] = new STRING[5];  
FOODENUM[6] = new STRING[6];

IEnumerator interface

public static ienumerator<string> Yield ()  
{  
    Yield return "Apple";  
    Yield return "orange";  
    Yield return "banana";  
}  
     
public static void Ienumeratortest ()  
{  
    var iterator=yield ();  
    while (iterator. MoveNext ())  
    {  
        Console.WriteLine (iterator). current);  
    }  
    /*out put 
     apple 
     orange 
     Banana 
     */
}

Array Fragment

public static void ArraySegment ()  
{  
    string[] vegetable = new string[] {"Chinese cabbage", "pepper", "potato", " Tomato "," broccoli "};  
    Count:get data begin the current index.  
    arraysegment<string> arraysegment = new arraysegment<string> (vegetable,2,2);  
    for (int i = Arraysegment.offset I <= arraysegment.offset + arraysegment.count; i++)  
    {  
        Console.WriteLine ( Arraysegment.array[i]);  
    }  
    * * out put 
     * potato 
       tomato 
       broccoli
* * *