第一题：编写一个控制台程序，输入一个日期，输出这一天是星期几。
class Program
{
static void Main(string[] args)
{
Console.WriteLine("请输入日期（格式xxxx-xx-xx）：");
string date = Console.ReadLine();
DateTime dt = Convert.ToDateTime(date);
string week = dt.DayOfWeek.ToString();
Console.WriteLine("Today is "+week);
}
}
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第二题：输入你的生日
private void button1_Click(object sender, EventArgs e)
{
// string date = textBox1.Text + "-" + textBox2.Text + "-" + textBox3.Text;
string input_date = dateTimePicker1.Text;
// Console.WriteLine(input_date);
DateTime dt = Convert.ToDateTime(input_date);
int y = dt.Year;
int m = dt.Month; // 获取月
int d = dt.Day; // 获取日
string date = m.ToString() + "-" + d.ToString();
DateTime birth = Convert.ToDateTime(date);
DateTime today = DateTime.Today.Date;
string week = dt.DayOfWeek.ToString();
if (DateTime.Compare(birth, today) > 0)
{
label5.Text = "您的"+(today.Year-y)+"岁生日还有" + (birth - today).Days + "天，那天是" + week;
}
if (DateTime.Compare(birth, today) == 0)
{
label5.Text = "祝你"+(today.Year-y)+"生日快乐！";
}
if (DateTime.Compare(birth, today) < 0)
{
label5.Text = "您的" + (today.Year - y) + "生日已过" + (today - birth).Days + "天，那天是" + week;
}
}
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第三题：车牌摇号
// 生成随机车牌
public string startNumer(Random r)
{
char E1 = (char)r.Next(65, 90);
char E2 = (char)r.Next(65, 90);
int N1 = r.Next(10, 99);
string n1 = N1.ToString();
int N2 = r.Next(9);
string n2 = N2.ToString();
string number = "" + E1 + n1 + E2 + n2;
return number;
}
// 为每个单选框的text赋值显示车牌信息
public void showNumber()
{
RadioButton[] radioButtons = new RadioButton[10];
radioButtons[0] = radioButton1;
radioButtons[1] = radioButton2;
radioButtons[2] = radioButton3;
radioButtons[3] = radioButton4;
radioButtons[4] = radioButton5;
radioButtons[5] = radioButton6;
radioButtons[6] = radioButton7;
radioButtons[7] = radioButton8;
radioButtons[8] = radioButton9;
radioButtons[9] = radioButton10;
Random r = new Random(); // 随机数种子不能写在循环中，否者会出现高并发的情况
foreach (RadioButton rb in radioButtons)
{
rb.Text = startNumer(r);
rb.Visible = true;
}
}
// 开始摇号
int times = 0;
private void button1_Click(object sender, EventArgs e)
{
if (times < 5)
{
showNumber();
times++;
}
else
{
MessageBox.Show("您已经用完摇号次数！");
}
}
// 判断选中
string hNumer;
private void Radio_CheckedChanged(object sender, EventArgs e)
{
RadioButton rb = sender as RadioButton;
hNumer = rb.Text;
/*if (rb.Checked)
{
MessageBox.Show("您选择的号码为 " + rb.Text);
}*/
}
private void button2_Click(object sender, EventArgs e)
{
MessageBox.Show("您已选择号码为 " + hNumer);
Application.Exit(); // 关闭应用
}
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第四题：扑克牌游戏
class Program
{
static int[] cards = new int[52]; // 存牌数组
static int times;
// 生成扑克牌
public static void initCard()
{
int k = 0;
// 生成扑克牌并存到牌盒中
for (int i = 1; i <= 4;i++)
{
for (int j = 1;j <= 13;j++)
{
int temp = 100;
temp *= i;
temp += j;
cards[k] = temp;
k++;
}
// 测试代码
// Console.WriteLine();
}
// 测试代码
//foreach(int i in cards)
//{
// Console.WriteLine(i+" ");
//}
// 测试结果：生成模块通过
}
// 洗牌
public static TimeSpan washCard()
{
// 控制数字输入
Boolean input = true;
while (input)
{
Console.Write("How many times for card：");
try
{
times = int.Parse(Console.ReadLine());
}
catch (FormatException)
{
Console.WriteLine("请输入正整数！");
Console.ReadKey();
Console.Clear();
washCard();
}
if (times <= 0)
{
Console.WriteLine("请输入正整数！");
}
else
{
input = false;
}
}
/* 洗牌算法
* 目的：将数组中的下标随机打乱
* 步骤：
* 1.生成随机数下标r1;
* 2.生成随机数下标r2;
* 3.用temp接收r1的值;
* 4.r1接收r2的值;
* 5.r2接收temp的值;
* 完成换值操作
* 注意事项：
* 1.两个随机数下标不能相同
* 2.洗牌一次的意思是更换20张牌的值（初步决定，后期视情况更改）
*/
//
Random rd = new Random();
int time_temp = times;
TimeSpan ts1 = new TimeSpan(DateTime.Now.Ticks);
while (time_temp > 0)
{
//洗一次牌
for (int i = 0; i < 20; i++)
{
int r1 = rd.Next(52);
int r2 = rd.Next(52);
while (r1 == r2)
{
r2 = rd.Next(52);
}
int temp = cards[r1];
cards[r1] = cards[r2];
cards[r2] = temp;
}
time_temp--;
}
TimeSpan ts2 = new TimeSpan(DateTime.Now.Ticks);
TimeSpan ts = ts2.Subtract(ts1).Duration(); // 时间差
return ts;
}
// 发牌
public static void emitCard()
{
//Console.WriteLine("进入发牌");
int[] player1 = new int[13];
int[] player2 = new int[13];
int[] player3 = new int[13];
int[] player4 = new int[13];
// 开始发牌
int count = 0;
for (int j = 0;j < 13;j++)
{
//Console.WriteLine(i+" ");
player1[j] = cards[count++];
player2[j] = cards[count++];
player3[j] = cards[count++];
player4[j] = cards[count++];
}
//Console.WriteLine("发牌完成");
// 明牌
Console.WriteLine("玩家1的牌：");
foreach (int i in player1)
{
string stemp = fiter(i);
Console.Write(stemp + " " );
}
Console.WriteLine();
Console.WriteLine("玩家2的牌：");
foreach (int i in player2)
{
string stemp = fiter(i);
Console.Write(stemp + " ");
}
Console.WriteLine();
Console.WriteLine("玩家3的牌：");
foreach (int i in player3)
{
string stemp = fiter(i);
Console.Write(stemp + " ");
}
Console.WriteLine();
Console.WriteLine("玩家4的牌：");
foreach (int i in player4)
{
string stemp = fiter(i);
Console.Write(stemp + " ");
}
Console.WriteLine();
}
// 过滤器
public static string fiter(int num)
{
/* 规则：
* 判断花色：
* 大于100小于200为红桃，ASCII码：003
* 大于200小于300为方块，ASCII码：004
* 大于300小于400为梅花，ASCII码：005
* 大于400为黑桃，ASCII码：006
*
* 判断值
* 1为A
* 11为J
* 12为Q
* 13为K
*
* 注意事项：
* 先判断花色再判断值
* 用字符串输出
*/
string cardType = "";
if (100 < num && num < 200)
{
cardType += "♥";
num -= 100;
}else if (200 < num && num < 300)
{
cardType += "♦ ";
num -= 200;
}
else if (300 < num && num < 400)
{
cardType += "♣";
num -= 300;
}
else if (400 < num)
{
cardType += "♠";
num -= 400;
}
// 判断牌值
if (num == 1)
{
cardType += "A";
}
else if (num == 11)
{
cardType += "J";
}
else if (num == 12)
{
cardType += "Q";
}
else if (num == 13)
{
cardType += "K";
}else
{
cardType += num;
}
// 排版
cardType += " ";
if(num != 10)
{
cardType += " ";
}
return cardType;
}
static void Main(string[] args)
{
Console.OutputEncoding = Encoding.UTF8; // 能够输出花色的关键
//Console.WriteLine("开始");
initCard();
//Console.WriteLine("初始化牌成功，正洗牌");
TimeSpan ts = washCard();
Console.WriteLine("洗牌完成\n");
emitCard();
Console.WriteLine("\n洗牌"+times+"次用时："+ts.Milliseconds.ToString()+" 毫秒\n");
}
}
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