: , , dataGridView.
3.1. #
. . , . . C#, , . , , , , , .
, 0-, , C# . .. .
:
<>[] <>;
C++ , . , T[] , T.
, . . , , , . , .
:
[] ;
[] = new [ ];
[] = { _ };
[] = new [] { _ };
[] = new [ ] { _ };
:
int[] a; // 1
int[] b = new int[4]; // 2 0
int[] c = { 61, 2, 5, -9 }; // 3 new
int[] d = new int[] { 61, 2, 5, -9 }; // 4
,
int[] e = new int[4] { 61, 2, 5, -9 }; // 5
, , . , .
. , , . - . C# , C# .
, :
|
|
|
static void TestDynAr() {
// A1
Console.WriteLine(" A1");
int size = int.Parse(Console.ReadLine());
int[] A1 = new int[size];
Arrs.CreateOneDimAr(A1);
Arrs.PrintAr1("A1",A1);
}
.
, - . , , - , , .
. . :
<>[, ,] <>;
, , . , , , . , , - . , :
int[,]matrix = {
{1,2},
{3,4}
};
. :
[,] ;
[,] = new [ _1, _2 ];
[,] = { _ };
[,] = new [,] { _ };
[,] = new [ _1, _2 ] { _ };
( ):
int[,] a; // 1
int[,] b = new int[2, 3]; // 2 0
int[,] c = {{1, 2, 3}, {4, 5, 6}}; // 3 new
int[,] c = new int[,] {{1, 2, 3}, {4, 5, 6}}; // 4 ,
int[,] d = new int[2,3] {{1, 2, 3}, {4, 5, 6}};// 5
, , , :
a[1, 4];
b[i, j];
b[j, i];
C# , (jagged arrays). , , , , . , . , , . - Fathers, , , Fathers[i] - i- . - Children, Children[i] - i- , Children[i][j] - j- i- . , GrandChildren [i][j][k] - j- i- .
. , - ; , int[][] , - int.
|
|
|
. new int[3][5], . . .
// -
//
int[][] jagger = new int[3][] {
new int[] {5,7,9,11},
new int[] {2,8},
new int[] {6,12,4}
};
jagger . , , . new, . , .
foreach
foreach . . , : . :
foreach ( in ) _
, ( ). , , . . , :
int[] a = { 24, 50, 18, 3, 16, -7, 9, -1 };
foreach :
foreach (int x in a) Console.WriteLine(x);
: , .
Array
Array. :
| Length | ( ) | |
| BinarySearch | ||
| Clear | ||
| Copy | ||
| GetValue | ||
| IndexOf | ||
| Reverse | ||
| Sort |
3.1.7. :
//
int[,] array2D = new int[,] { { 1, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 } };
// (- )
int[,] array2Da = new int[4, 2] { { 1, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 } };
// ,
string[,] array2Db = new string[3, 2] { { "one", "two" }, { "three", "four" },
{ "five", "six" } };
//
int[,,] array3D = new int[,,] { { { 1, 2, 3 }, { 4, 5, 6 } },
{ { 7, 8, 9 }, { 10, 11, 12 } } };
//
int[,,] array3Da = new int[2, 2, 3] { { { 1, 2, 3 }, { 4, 5, 6 } },
{ { 7, 8, 9 }, { 10, 11, 12 } } };
|
|
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//
System.Console.WriteLine(array2D[0, 0]);
System.Console.WriteLine(array2D[0, 1]);
System.Console.WriteLine(array2D[1, 0]);
System.Console.WriteLine(array2D[1, 1]);
System.Console.WriteLine(array2D[3, 0]);
System.Console.WriteLine(array2Db[1, 0]);
System.Console.WriteLine(array3Da[1, 0, 1]);
System.Console.WriteLine(array3D[1, 1, 2]);
// ( ):
// 1
// 2
// 3
// 4
// 7
// three
// 8
// 12
