Convert C++ to Matlab Code

andit satria

2019 3 11

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5 次查看（30 天）

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Can anyone help me convert the C++ code below to Matlab code?

#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
using namespace std;
const int N = 8; 
const int L = 3; 
const int C = 150; 
const int MULTIPLIER = 10;
int profit[N + 1][C + 1];
int PV[N + 1][L + 1];
int benefit[N + 1][L + 1];
int calculate(int index, int capacity){
  if(index == 0 || capacity == 0) return 0; 
  if(profit[index][capacity] != -1) return profit[index][capacity];
  int ans = 0;
  ans = max(ans, calculate(index - 1, capacity)); 
  if(PV[index][1] < capacity) {
    ans = max(ans, calculate(index - 1, capacity - PV[index][1]) + benefit[index][1]);
  }
  if(PV[index][2] < capacity) {
    ans = max(ans, calculate(index - 1, capacity - PV[index][2]) + benefit[index][2]);
  }
  if(PV[index][3] < capacity) {
    ans = max(ans, calculate(index - 1, capacity - PV[index][3]) + benefit[index][3]);
  }
  profit[index][capacity] = ans;
  return profit[index][capacity];
}
int n, true_cap;
int main(){
  memset(profit, -1, sizeof profit);
  scanf("%d%d", &n, &true_cap);
  for(int i = 1; i <= n; i++){
    for(int j = 1; j <= L; ++j){
      double pv;
      scanf("%lf%d", &pv, &benefit[i][j]);
      PV[i][j] = int(pv * MULTIPLIER);
    }
  }
  int cap = true_cap * MULTIPLIER;
  printf("Profit Maksimum: %d\n", calculate(n, cap));
  return 0;
}

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Guillaume 2019-3-11

Which part of the C++ code don't you understand? Don't you have documentation for the code that tells you what it does?

More importantly, does this code actually work? I can already see that it has no check for buffer overflows so if the user specify too large a n (anything greater than 7!) the program will at best crash, at worse be very nefarious. In addition, depending on the capacity input, the complexity of calculate could be O(e^n), spending much of that time calculating values that would not be used. It does not look to me that this code has been thought out properly.

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