递归--汉诺塔

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//n：盘子个数  a,b,c用字符表示三根柱子
void hanoiTower(int n, char a, char b, char c)
{
    static int step = 0;
    if (n == 1)
    {
        cout << ++step<<":  "<<a << "→" << c << endl;
        return;
    }
    else
    {
        hanoiTower(n - 1, a, c, b);
        cout << ++step << ":  " << a << "→" << c << endl;
        hanoiTower(n - 1, b, a, c);
    }        
}

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