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  • Visual Studio-C#-20160417-打印星星,迭代穷举

    static void Main22(string[] args)
    {
    //菱形
    Console.WriteLine("请输入腰长:");
    int n = Convert.ToInt32(Console.ReadLine());
    for (int i = 0; i <n; i++)
    {
    for (int j = 0; j <n-i; j++)
    {
    Console.Write(" ");
    }
    for (int k =0; k <2*i-1; k++)
    {
    Console.Write("★");
    }
    Console.Write(" ");
    }
    for (int l = 0; l <=n; l++)
    {
    for (int m = 0; m <l; m++)
    {
    Console.Write(" ");
    }
    for (int o = 2*n-1; o >2*l; o--)
    {
    Console.Write("★");
    }
    Console.Write(" ");
    }
    }


    static void Main14(string[] args)
    {
    //右上等腰直角三角形
    Console.WriteLine("请输入腰长:");
    int n = Convert.ToInt32(Console.ReadLine());
    for (int i = 0; i <=n; i++)
    {
    for (int k = 0; k < i; k++)
    {
    Console.Write(" ");
    }
    for (int j = n; j > i; j--)
    {
    Console.Write("★");
    }
    Console.Write(" ");
    }
    }


    static void Main13(string[] args)
    {
    //右下等腰直角三角形
    Console.WriteLine("请输入腰长:");
    int n = Convert.ToInt32(Console.ReadLine());
    for (int i = 0; i<n; i++)
    {
    for (int k = 1; k <n-i; k++)
    {
    Console.Write(" ");
    }
    for (int j = 0; j <=i; j++)
    {
    Console.Write("★");
    }
    Console.Write(" ");
    }
    }


    static void Main12(string[] args)
    {
    //左上等腰直角三角形
    Console.WriteLine("请输入腰长:");
    int n = Convert.ToInt32(Console.ReadLine());
    for (int i = n; i >=0; i--)
    {
    for (int j = 0; j < i; j++)
    {
    Console.Write("★");
    }
    Console.Write(" ");
    }
    }


    static void Main11(string[] args)
    {
    //左下等腰直角三角形
    Console.WriteLine("请输入腰长:");
    int n = Convert.ToInt32(Console .ReadLine());
    for (int i = 0; i <= n; i++)
    {
    for (int j = 0; j < i; j++)
    {
    Console.Write("★");
    }
    Console.Write(" ");
    }
    }

    #region*****循环练习*****
    static void Main5(string[] args)
    {
    int j = 1;
    for (int i = 6; i >0; i--)
    {
    j = j*i;
    }
    Console.Write(j);
    }


    static void Main4(string[] args)
    {
    for (int i = 1; i < 100; i++)
    {
    if (i%7==0||i%10==7||i/10==7)
    Console.Write("{0} ",i);
    }
    }

    static void Main3(string[] args)
    {
    for (int i = 0; i < 128; i++)
    {
    Console.Write((char)i+"={0} ",i);
    }
    }


    static void Main2(string[] args)
    {
    for (int i = 1; i < 51; i++)
    {
    int j = 2 * i - 1;
    Console.Write("{0} ",j);
    }
    }


    static void Main1(string[] args)
    {
    Console.Write("这是一个");
    for (int i = 1; i <= 100; i++)
    {
    Console.Write("非常");
    }
    Console.Write("长的句子");
    }
    #endregion

    //斐波那契数列
    static void Main(string[] args)
    {
    int b=1;
    int c=0;
    int d=0;
    for (int a = 1; a < 24; a++)
    {
    d = b + c;
    b = c;
    c = d;
    Console.Write("{0} ",d);
    }
    }

    //猴子吃桃子
    static void Main32(string[] args)
    {
    int b=1;
    for (int a = 1; a < 7; a++)
    {
    b = (b + 1) * 2;
    }
    Console.Write("原有{0}个桃子", b);
    }


    static void Main31(string[] args)
    {
    for (int a = 0; a <= 20; a++)
    {
    for (int b = 0; b <= 50; b++)
    {
    for (int c = 0; c <= 7; c++)
    {
    if (5 * a + 2 * b + 15 * c == 100)
    Console.WriteLine("购买{0}支牙刷,{1}块肥皂,{2}瓶洗发水",a,b,c);
    }
    }
    }
    }

    static void Main1111111111111(string[] args)
    {

    //100以内的质数
    for (int i = 2; i < 100; i++)
    {
    bool a = true;
    for (int j = 2; j <=Math .Sqrt( i); j++)
    {
    if (i % j == 0)
    {
    a=false;
    break;
    }
    }
    if (a)
    Console.Write("{0} ", i);
    }
    }

    没有什么问题是一个FOR循环解决不了的,如果有那就是两个!
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  • 原文地址:https://www.cnblogs.com/xcc2016/p/5401045.html
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