抛出异常

public static void Reverse(int[] array, int begin, int end){
if (array == null){
    throw new ArgumentNullException("array", "array不能为空"); 
}
if (begin < 0){
    throw new ArgumentOutOfRangeException("begin", "begin不能小于0");    }
if (end < begin){
    throw new ArgumentOutOfRangeException("end不能小于begin", (Exception)null);
}
if (end >= array.Length){
    throw new ArgumentOutOfRangeException("end", "end超过array最大下标");
}
while (end > begin){
    int temp = array[begin];
    array[begin] = array[end];
    array[end] = temp;
    begin++;
    end--;
}
}