1.创建一个字符数组，2行13列，保存26个字母
using System;
public class Test
{
public static void Main()
{
//创建一个字符数组，2行13列，保存26个字母
char[,] arrayChar = new char[2,13];
arrayChar[0,0] = 'a';
for(var i = 0;i < arrayChar.GetLength(0);i++){
for(var j = 0;j < arrayChar.GetLength(1);j++){
arrayChar[i,j] = (char)(arrayChar[0,0] + i*13 + j);
}
}
foreach(var item in arrayChar){
Console.Write(item + " ");
}
}
}2.把数组中能被3整除的数乘以4除以5用模代替
using System;
public class Test
{
public static void Main()
{
//把数组中能被3整除的数乘以4除以5用模代替；
int[,] arr={
{1,2,3,4,5},
{5,4,3,2,1},
{2,3,2,4,6}
};
for(var i = 0;i < arr.GetLength(0);i++){
for(var j = 0;j < arr.GetLength(1);j++){
if(arr[i,j]%3==0){
arr[i,j] = arr[i,j]*4%5;
}
}
}
foreach(var item in arr){
Console.Write(item + " ");
}
}
}3.{{1} ,{1,1},{1,1,1},{1,1,1,1}}
{{1},{1,2},{1,2,3},{1,2,3,4}}
{{1},{2,2},{3,3,3},{4,4,4,4}}
{{‘a’},{‘b’,’b’},{‘c’,’c’,’c’}}
using System;
namespace cchoopDemo
{
class Program
{
static void Main(string[] args)
{
//{{1} ,{1,1},{1,1,1},{1,1,1,1}}
int[][] arr = new int[4][];
for (int i = 0; i < arr.Length; i++)
{
arr[i] = new int[i + 1];
for (int j = 0; j < arr[i].Length; j++)
{
arr[i][j] = 1;
}
}
//{{1},{1,2},{1,2,3},{1,2,3,4}}
int[][] arr1 = new int[4][];
for (int i = 0; i < arr1.Length; i++)
{
arr1[i] = new int[i + 1];
for (int j = 0; j < arr1[i].Length; j++)
{
arr1[i][j] = j + 1;
}
}
//{{1},{2,2},{3,3,3},{4,4,4,4}}
int[][] arr2 = new int[4][];
for (int i = 0; i < arr2.Length; i++)
{
arr2[i] = new int[i + 1];
for (int j = 0; j < arr2[i].Length; j++)
{
arr2[i][j] = i + 1;
}
}
//{{'a'},{'b','b'},{'c','c','c'}}
char[][] arr3 = new char[4][];
for (int i = 0; i < arr2.Length; i++)
{
arr3[i] = new char[i + 1];
for (int j = 0; j < arr3[i].Length; j++)
{
arr3[i][j] = (char)(i + 'a');
}
}
foreach (var item in arr3)
{
foreach (var a in item)
{
Console.Write(a + " ");
}
Console.WriteLine();
}
}
}
}4.杨辉三角
using System;
namespace cchoopDemo
{
class Program
{
static void Main(string[] args)
{
//杨辉三角
int n = Int32.Parse(Console.ReadLine());
int[][] arr = new int[n][];
for (int i = 0; i < arr.Length; i++)
{
arr[i] = new int[i + 1];
for (int j = 0; j < arr[i].Length; j++)
{
if(j ==0 || j == arr[i].Length - 1)
{
arr[i][j] = 1;
}
else
{
arr[i][j] = arr[i - 1][j - 1] + arr[i - 1][j];
}
}
}
foreach (var item in arr)
{
foreach (var a in item)
{
Console.Write(a + " ");
}
Console.WriteLine();
}
}
}
}5.数组（矩阵反转）定义一个二维数组a[3][4]，输入整数到数组中，
然后将a数组矩阵反转后存入到b[4][3]数组中，并将b输出。
int[,] arr={{3,5,1,4},{7,2,6,8},{0,9,4,6}}
比如：
输入：
3 5 1 4
7 2 6 8
0 9 4 6
输出：
3 7 0
5 2 9
1 6 4
4 8 6
using System;
namespace cchoopDemo
{
class Program
{
static void Main(string[] args)
{
//1.数组（矩阵反转）定义一个二维数组a[3][4]，输入整数到数组中，
//然后将a数组矩阵反转后存入到b[4][3]数组中，并将b输出。
int[,] arr = { { 3, 5, 1, 4 }, { 7, 2, 6, 8 }, { 0, 9, 4, 6 } };
int[,] newArr = new int[arr.GetLength(1), arr.GetLength(0)];
for (int i = 0; i < arr.GetLength(0); i++)
{
for (int j = 0; j < arr.GetLength(1); j++)
{
newArr[j, i] = arr[i, j];
}
}
Console.WriteLine("打印旧矩阵：");
for (int i = 0; i < arr.GetLength(0); i++)
{
for (int j = 0; j < arr.GetLength(1); j++)
{
Console.Write(arr[i, j] + " ");
}
Console.WriteLine();
}
Console.WriteLine("打印新矩阵：");
for (int i = 0; i < newArr.GetLength(0); i++)
{
for (int j = 0; j < newArr.GetLength(1); j++)
{
Console.Write(newArr[i, j] + " ");
}
Console.WriteLine();
}
}
}
}2.将一个int数组向左滚动平移1次。{3,5,8,7}→{5,8,7,3}
using System;
namespace cchoopDemo
{
class Program
{
static void Main(string[] args)
{
//2.将一个int数组向左滚动平移1次。{ 3,5,8,7}→{ 5,8,7,3}
int[] arr = { 3, 5, 8, 7 };
int n = Int32.Parse(Console.ReadLine()); //滚动的次数
Console.Write("滚动前的数组：");
foreach (var item in arr)
{
Console.Write(item + " ");
}
for (int x = 0; x < n; x++)
{
int temp = arr[0];
for (int i = 0; i < arr.Length; i++)
{
if (i != arr.Length - 1)
{
arr[i] = arr[i + 1];
}
else
{
arr[i] = temp;
}
}
}
Console.WriteLine();
Console.Write("向左滚动{0}次后的数组：",n);
foreach (var item in arr)
{
Console.Write(item + " ");
}
Console.WriteLine();
}
}
}