数组中重复的数字

 1 using System.Collections;
 2 namespace JianZhiOffer
 3 {
 4     class DuplicateInArray
 5     {
 6         public bool duplicate(int[] numbers, int[] duplication)
 7         {
 8             // write code here
 9             if (numbers == null || numbers.Length < 1)
10                 return false;
11 
12             Queue q = new Queue();
13 
14             for (int i = 0; i < numbers.Length; i++)
15             {
16                 if (q.Contains(numbers[i]))
17                 {
18                     duplication[0] = numbers[i];
19                     return true;
20                 }
21                 else 
22                 {
23                     q.Enqueue(numbers[i]);
24                 }
25             }
26 
27             return false;
28         }
29     }
30 }