#region --猜拳（三局两胜）--
Random r = new Random();
int x = r.Next(3);
int sum = 0;
Console.WriteLine("与电脑猜拳游戏");
for (int i = 0; i < 3; i++)
{
Console.WriteLine("电脑已出拳，请出拳（石头-0，布-1，剪刀-2）");
int r1 = int.Parse(Console.ReadLine());
Console.WriteLine("电脑出拳" + x);
Console.WriteLine("您出拳" + r1);
if (x == 0)
{
if (r1 == 0)
{
Console.WriteLine("平局");
}
if (r1 == 1)
{
Console.WriteLine("玩家赢");
sum = sum + 1;
}
if (r1 == 2)
{
Console.WriteLine("玩家输");
}
}
if (x == 1)
{
if (r1 == 0)
{
Console.WriteLine("玩家输");
}
if (r1 == 1)
{
Console.WriteLine("平局");
}
if (r1 == 2)
{
Console.WriteLine("玩家赢");
sum = sum + 1;
}
}
if (x == 2)
{
if (r1 == 0)
{
Console.WriteLine("玩家赢");
sum = sum + 1;
}
if (r1 == 1)
{
Console.WriteLine("玩家输");
}
if (r1 == 2)
{
Console.WriteLine("平局");
}
}
}
if (sum >= 2)
{
Console.WriteLine("玩家赢");
}
else
{
Console.WriteLine("玩家输");
}
# endregion
#region --求和--
int he1=0;
for (int a = 1; a < 101; a++)
{
he1 = he1 + a;
}
Console.WriteLine("1-100的和是："+he1);
int he2 = 0;
for (int a = 1; a < 101; a = a + 2)
{
he2 = he2 + a;
}
Console.WriteLine("100内的奇数和是："+he2);
int he3 = 0;
for (int a = 2; a < 101; a = a + 2)
{
he3 = he3 + a;
}
Console.WriteLine("100内的偶数和是："+he3);
int he4 = 0;
for (int a = 1; a < 101; a++)
{
if (a % 7 == 0 || a / 10 == 7 || a % 10 == 7)
{
he4 = he4 + a;
}
}
Console.WriteLine("100以内与7有关的数的和是："+he4);
int he5 = 0;
for (int a = 1; a < 101; a++)
{
int xx = 0;
for (int b = 1; b < a; b++)
{
if (a % b == 0)
{
xx = xx + 1;
}
}
if (xx == 1)
{
he5 = he5 + a;
}
}
Console.WriteLine("100以内质数的和是：" + he5);
#endregion
#region --菱形--
//右上
for (int m = 1; m < 10; m++)
{
for (int n = 1; n <= m; n++)
{
Console.Write("☆");
}
Console.Write("\n");
}
//右下
for (int m = 10; m > 1; m--)
{
for (int n = 1; n < m; n++)
{
Console.Write("☆");
}
Console.Write("\n");
}
//左下
for (int m = 1; m < 10; m++)
{
for (int n = 1; n < m; n++)
{
Console.Write(" ");
}
for (int l = 10; l > m; l--)
{
Console.Write("☆");
}
Console.Write("\n");
}
//左上
for (int m = 1; m < 10; m++)
{
for (int n = 9; n >m; n--)
{
Console.Write(" ");
}
for (int l = 1; l <= m;l++ )
{
Console.Write("☆");
}
Console.Write("\n");
}
//上半部分
for (int m = 1; m < 10; m++)
{
for (int n = 9; n > m; n--)
{
Console.Write(" ");
}
for (int l = 1; l <= (2 * m - 1); l++)
{
Console.Write("☆");
}
Console.Write("\n");
}
//下半部分
for (int m = 1; m < 9; m++)
{
for (int l = 1; l <= m; l++)
{
Console.Write(" ");
}
for (int n = 1; n <= (2 * (9 - m) - 1); n++)
{
Console.Write("☆");
}
Console.Write("\n");
}
//完整
#endregion
#region --打印图案--
string[,] shuzu;
shuzu = new string[9, 9]{
{"★","★","★","★"," ","★","★","★","★"},
{"★","★","★","★"," ","★","★","★","★"},
{"★","★","★"," ","★"," ","★","★","★"},
{"★","★"," ","★"," ","★"," ","★","★"},
{"★"," ","★","★"," ","★","★"," ","★"},
{"★","★","★","★"," ","★","★","★","★"},
{"★","★","★","★"," ","★","★","★","★"},
{"★","★","★"," ","★"," ","★","★","★"},
{"★","★","★"," ","★"," ","★","★","★"},
};
for (int i = 0; i < 9; i++)
{
for(int j=0;j<9;j++)
{
Console.Write(shuzu[i,j]);
}
Console.Write("\n");
}
#endregion
#region--小球弹起高度--
Console.WriteLine("请输入次数：");
int cishu =int.Parse(Console.ReadLine());
double h = 10;
for (int i = 1; i <= cishu; i++)
{
h = h * 0.75;
}
Console.WriteLine(h);
#endregion
#region --兔子--
Console.WriteLine("输入几个月：");
int shuru = int.Parse(Console.ReadLine());
int youtu=1;
int xiaotu = 0;
int chengtu = 0;
for (int i = 2; i <= shuru; i++)
{
chengtu = chengtu + xiaotu;
xiaotu = youtu;
youtu = chengtu;
}
Console.WriteLine("{0}个月后有{1}对成兔，{2}队小兔，{3}对幼兔，总共有{4}对兔子。",shuru,chengtu,xiaotu,youtu,chengtu + xiaotu + youtu);
#endregion
#region --穷举--
int ss = 0;
for(int m=1;m<50;m++)
{
for (int n = 1; n < 20;n++ )
{
for (int l = 1; l < 10; l++)
{
for (int i = 1; i < 7; i++)
{
if (2 * m + 5 * n + 10 * l + 15 * i == 100)
{
ss = ss + 1;
Console.WriteLine("第{0}种，铅笔{1}支，铅笔盒{2}个，文件夹{3}个，彩笔{4}盒，正好花完100元。",ss, n, m, l, i);
}
}
}
}
}
#endregion