带打印子结点的自底向上算法

对我随笔的第一个算法做了一点点改动，可以打印出全部的切割长度，时间复杂度不算高

#include<iostream>
#include<time.h>
#include<algorithm>

using namespace std;
int p[1000], r[1000], s[1000];
int *EXTENDED_BOTTON_UP_CUT_ROD(int *p, int n)
{
    r[0] = 0;
    int q = 0;
    for(int j = 1; j <= n; j++)
    {
        q = -1e8;
        for(int i = 1; i <= j; i++)
        {
            if(q < (p[i] + r[j - i]))
            {
                q = p[i]+r[j-i];
                s[j] = i;
                r[j] = q;
            }
        }
    }
    return r, s;
}
/*PRINT_CUT_ROD_SOLUTION(p, n)
{

}
*/

int main()
{    
    int n = 0, q = 0; //q是最优收益
    clock_t start, finish;
    double duration = 0.0;
    int  *a, *b;
    p[0] = 0;
    p[1] = 1;
    p[2] = 5;
    p[3] = 8;
    p[4] = 9;
    p[5] = 10;
    p[6] = 17;
    p[7] = 17;
    p[8] = 20;
    p[9] = 24;
    p[10] =30;
    cout << "请输入钢管的长度:";
    cin >> n;
    start = clock();
    (a, b) = EXTENDED_BOTTON_UP_CUT_ROD(p, n);
    while(n > 0)
    {
        cout << s[n] << endl;
        n = n - s[n];
    }
    cout << "最优长度为:" << q;
    finish = clock();
    duration = (double)(finish - start )/CLOCKS_PER_SEC;
    cout << "运行时间为" << duration << endl;

    return 0;
}

 

}