在这个问题中,你得到了一个由字符串 s 代表的学生队列.字符串的第 i 号字符代表了队列中的第 i 号学生.如果两个邻近的学生是男孩和女孩,他们可以交换位置.你需要找到 k 次交换后队列的最后顺序.
To solve this problem, we can simulate the swapping process k times using a loop. In each iteration, we can iterate through the queue and check if adjacent students are of opposite gender. If so, we can swap their positions. After k iterations, we can return the final order of the queue.

Here's the Python code to solve the problem:

```
def swap_queue(s, k):
    queue = list(s)
    n = len(queue)
    for i in range(k):
        j = 0
        while j < n-1:
            if queue[j] == 'B' and queue[j+1] == 'G':
                queue[j], queue[j+1] = queue[j+1], queue[j]
                j += 2
            else:
                j += 1
    return ''.join(queue)
```

This function takes in two arguments, the string representation of the initial queue and the number of iterations k. It creates a list representation of the queue so that we can easily swap elements, and initializes the length variable n. The loop then iterates k times and performs the swapping process as described earlier. Finally, it returns the final order of the queue as a string.

Note that this solution assumes that the input string only contains the characters 'B' and 'G' to represent boys and girls respectively. If other characters are present, they will be ignored during the swapping process.