根据不同的条件筛选随机数

学习和工作个人笔记，只为方便查看

1. 普通随机数

   1   public static int randRange(int min, int max) 
   2      {
   3         int randNumber = Random.Range(min, max+1);
   4         return randNumber;
   5     }

2. 在一定范围内，随机的值不在某数组中（注意使用范围，避免死循环）

    1 public static int randRangeNotIn(int min, int max, int[] array) 
    2 {
    3     int randNumber = 0;
    4     bool flag = false;
    5 
    6     while (true) 
    7     {
    8         flag = false;
    9         randNumber = Random.Range(min, max+1);
   10         for (int i = 0; i < array.Length; i++) 
   11         {
   12             if (randNumber == array[i]) 
   13             {
   14                 flag = true;
   15             　　 break;
   16             }
   17         }
   18 
   19         if (flag == false)
   20             break;
   21      }
   22 
   23     return randNumber;
   24 }
   25

3. 在一个范围内产生n个随机数(必须满足：max - min + 1 > count)

    1 public static int[] randArray(int min, int max, int count) 
    2 {
    3       ArrayList array = new ArrayList();
    4       if (count <= (max + 1)) 
    5       {
    6           while (array.Count < count)
    7           {
    8                 int randNumber = Random.Range(min, max + 1);
    9                 bool flag = true;
   10                 for (int i = 0; i < array.Count; i++)
   11                 {
   12                       if (randNumber == (int)array[I])
   13                       {
   14                            flag = false;
   15                            break;
   16                       }
   17                 }
   18                 if (flag == true)
   19                 {
   20                       array.Add(randNumber);
   21                 }
   22             }
   23     　　　}
   24 
   25     int[] v = new int[array.Count];
   26     array.CopyTo(v);
   27     return v;
   28 }                    

在一个范围内随机n个值，这n个值，不在某个数组中(注意适用范围，避免死循环)

 1 public static int[] randArrayCountNotIn(int min, int max, int count, int[] oldarray) {
 2     ArrayList array = new ArrayList();
 3     if (count <= (max + 1)) {
 4         while (array.Count < count)
 5         {
 6             int randNumber = Random.Range(min, max + 1); ;
 7             int flag = true;
 8             for (int i = 0; i < array.Count; i++)
 9             {
10                 if (randNumber == (int)array[i])
11                 {
12                     flag = false;
13                     break;
14                 }
15             }
16             for (int i = 0; i < oldarray.Length; i++)
17             {
18                 if (randNumber == oldarray[i])
19                 {
20                     flag = false;
21                     break;
22                 }
23             }
24             if (flag == true)
25             {
26                 array.Add(randNumber);
27             }
28         }
29     }
30     int[] v = new int[array.Count];
31     array.CopyTo(v);
32     return v;
33 }