数组的创建及基本使用方法

 

using System;

public class BasicArray

{

    //数组的创建及基本使用方法

    public static void BasicOp()

    {

        int[] Number = new int[10];

        for (int i = 0; i < Number.Length; ++i)

        {

            Number[i] = i;

            Console.WriteLine(Number[i]);

        }

    }

    //使用foreach遍历数组

    public static void ForeachOp()

    {

        int[] Number = new int[10];

        for (int i = 0; i < Number.Length; ++i)

        {

            Number[i] = i;

        }

        foreach (int i in Number)

            Console.WriteLine(i);

    }

    //使用变长数组

    public static void ParamArray()

    {

        int [] Number = new int [10];

        for (int i = 0; i < Number.Length; ++i)

        {

            Number[i] = i;

        }

        PassVarArray(Number);

    }

    //定义变长数组操作函数

    public static void PassVarArray(params int[] intValues)

    {

        foreach (int i in intValues)

            Console.WriteLine(i);

    }

    //多维数组

    public static void RectArrayOp()

    {

        //Length得到整个数组的长度

        const int row = 10;

        const int col = 10;

        int[,] Table = new int[row, col];

        for (int i = 0; i < row; i++)

        {

            for (int j = 0; j < col; j++)

                Table[i,j] = i * row + j;

        }

        //使用foreach访问数组中的每个值

        foreach (int i in Table)

            Console.WriteLine(i);

    }

    //创建Jagged数组

    public static void JaggedArrayOp()

    {

        const int row = 10;

        const int col = 10;

        int [][] Table = new int[row][];

        for (int i = 0; i < row; i++)

        {

            Table[i] = new int[i];

            for (int j = 0; j < Table[i].Length; j++)

                Table[i][j] = i * row + j;

        }

        //使用foreach访问数组中的每个值

        foreach (int[] ele in Table)

            foreach(int i in ele)

                Console.WriteLine(i*i);

    }

    //使用系统数组定义的方法

    public static void SystemArrayOp()

    {

        const int MAX_LENGTH = 10;

        Random rd = new Random();

        int[] Number = new int[MAX_LENGTH];

        for (int i = 0; i < MAX_LENGTH; i++)

        {

            Number[i] = (rd.Next() % 10);

        }

        foreach (int i in Number)

            Console.Write("{0} ", i);

        Console.WriteLine();

        Array.Sort(Number);

        foreach (int i in Number)

            Console.Write("{0} ", i);

        Console.WriteLine();

        Array.Reverse(Number);

        foreach (int i in Number)

            Console.Write("{0} ", i);

        Console.WriteLine();

    }

}

public class CallBasicArray

{

    public static void test()

    {

        BasicArray.BasicOp();

        BasicArray.ForeachOp();

        BasicArray.ParamArray();

        BasicArray.RectArrayOp();

        BasicArray.JaggedArrayOp();

        Console.Clear();

        BasicArray.SystemArrayOp();

    }

}