顺序表习题（1）-打印非递减数组a与b的升序并集（去除重复元素）

void Print_Union(SqList a,SqList b)
{
    int p = 0, q = 0;    //初始化指针
    int flag = -1;        //记录上一次打印的元素
    while (p!=a.length&&q!=b.length)
    {
        //a与b均非空时
        if (a.data[p] > b.data[q])
        {
            if (b.data[q] != flag)
                cout << b.data[q] << endl;
            flag = b.data[q];        //记录当前打印元素
            q++;
            continue;
        }
        if (a.data[p] < b.data[q])
        {
            if (a.data[p] != flag)
                cout << a.data[p] << endl;
            flag = a.data[p];
            p++;
            continue;
        }
        if (a.data[p] == b.data[q])
        {
            if (a.data[p] == b.data[q])
            {
                if (a.data[p] != flag)
                    cout << a.data[p] << endl;
                flag = a.data[p];
                p++;
                q++;
                continue;
            }
        }
    }
    while (p!=a.length)
    {
        //打印a的剩余元素
        if (a.data[p] != flag)
            cout << a.data[p] << endl;
        flag = a.data[p];
        p++;
    }
    while (q != b.length)
    {
        //打印b的剩余元素
        if (b.data[q] != flag)
            cout << b.data[q] << endl;
        flag = b.data[q];
        q++;
    }
}