This article demonstrates the basic usage of various C# arrays using examples. It mainly includes: one-dimensional array, two-dimensional array, jagged array, two arrays of different lengths, matrix arrays with 3 rows and 4 columns, etc.
The specific implementation code is as follows:
using System;
class ArrayApp
{
public static void Main ( )
{
//Usage of one-dimensional array: Calculate the number of odd and even numbers in the array ("One-dimensional array demonstration: odd and even numbers in a one-dimensional array");
int[ ] arr1 = new int[ ] {8, 13, 36, 30, 9, 23, 47, 81 };
int odd = 0;
int even = 0;
foreach ( int i in arr1 )
{
if ( i % 2 == 0 )
even ++;
else
odd ++;
}
("There are a total of {0} Even number， {1} An odd number。", even, odd);
//Usage of two-dimensional array: matrix of m rows and n columns ("Two-dimensional array demonstration: 3 rows and 4 columns matrix");
int[,] arr2 = new int[3,4] { {4,2,1,7}, {1,5,4,9}, {1,3,1,4} };
for ( int i = 0; i < 3; i++ )
{
for ( int j = 0; j < 4; j++ )
{
(arr2[i,j] + "\t");
}
( );
}
//Usage of serrated arrays: Two arrays with different numbers of elements ("Serrated Array Demonstration: Two Arrays with Different Lengths");
int[][] arr3 = new int[2][];
arr3[0] = new int[5] {1,3,5,7,9};
arr3[1] = new int[4] {2,4,6,8};
// char[][] arr3 = new char[][] { {H,e,l,l,o}, {C,s,h,a,r,p} };
for ( int i = 0; i < ; i++)
{
("The{0}The arrays are：\t",i+1);
for ( int j = 0; j < arr3[i].Length; j++ )
{
(arr3[i][j]+ "\t");
}
();
}
}
}