[V0.1.0]Random problem

input file:in.txt    output file:out.txt
time limit: 500ms
language:ASM、C、C++、C#、Java、VB
Difficulty：★
Describe：

    Assume that you have m unit cubes(whose edge lengths is 1) and a 3 - dimensional container .Your simple task is to put these cubes in random different integer coordinates of the container.

Input：

    The first line:Three interger x,y,z(0<x,y,z<50)separated by whitespace, denoting the lengths of the 3 - dimensional container on each dimensional ;

    The second line:A single interger m,denoting the number of cubes(0<m<=x*y*z);

    The following m lines:A single string,denoting the name of each unit cube.
Output：
    For each unit cube, output one line containing the coordinate of the cube in the format shown in the sample output.
Sample Input：

2 3 2
4
方块A
方块B
方块C
方块D
Sample Output：

方块A (2,1,2)
方块B (1,2,2)
方块C (1,1,2)
方块D (2,3,1)

Solution:

//C#4.0 Console Applicationusing System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;using System.Collections;namespace RapidProtyping0_1_0{    struct point3d    {        public int x, y, z;        public point3d(int x, int y, int z)        {            this.x = x;            this.y = y;            this.z = z;        }    }    class Program    {        static void Main(string[] args)        {            using (StreamReader sr = new StreamReader("in.txt", System.Text.Encoding.GetEncoding("GB2312")))            {                using (StreamWriter sw = new StreamWriter("out.txt"))                {                    readinfo(sr, sw);                }            }        }        static void readinfo(StreamReader sr, StreamWriter sw)        {            int x, y, z;            string line = sr.ReadLine();            setXYZ(out x, out y, out z, line);            int n = Convert.ToInt32(sr.ReadLine());            point3d[] parray = new point3d[n];            for (int i = 0; i < n; i++)            {                string line2 = sr.ReadLine();                int x1, y1, z1;                getRandomPoint(parray, i, x, y, z, out x1, out y1, out z1);                point3d pt = new point3d(x1, y1, z1);                parray[i] = pt;                sw.WriteLine(line2 + " (" + x1 + "," + y1 + "," + z1 + ")");            }        }        static private void getRandomPoint(point3d[] plist, int i, int x, int y, int z, out int x1, out int y1, out int z1)        {            do            {                Random r = new Random();                x1 = r.Next(1, x + 1);                y1 = r.Next(1, y + 1);                z1 = r.Next(1, z + 1);            }            while (Exist(x1, y1, z1, plist, i));        }        static private bool Exist(int x1, int y1, int z1, point3d[] plist, int i)        {            for (int j = 0; j < i; j++)            {                if (plist[j].x == x1 && plist[j].y == y1 && plist[j].z == z1)                    return true;            }            return false;        }        static private void setXYZ(out int x, out int y, out int z, string line)        {            string[] s = line.Split(' ');            x = Convert.ToInt32(s[0]);            y = Convert.ToInt32(s[1]);            z = Convert.ToInt32(s[2]);        }    }}