Untitled

#include <iostream>

using namespace std;

void bestFit(int blockSize[], int processSize[], int m, int n) {
  // Keep track of allocation for each block
  int allocation[m] = {-1};

  // Traverse through process
  for (int i = 0; i < n; i++) {
    int bestIdx = -1; // Index of best fit block

    // Find the best fit block for current process
    for (int j = 0; j < m; j++) {
      if (blockSize[j] >= processSize[i]) {
        // If not allocated yet or smaller block found
        if (allocation[j] == -1 || blockSize[j] - processSize[i] < blockSize[bestIdx] - processSize[i]) {
          bestIdx = j;
        }
      }
    }

    // If we found a suitable block
    if (bestIdx != -1) {
      // Allocate block to process
      allocation[bestIdx] = i;

      // Reduce available memory in this block
      blockSize[bestIdx] -= processSize[i];

      cout << "Process No: " << i + 1 << " | Process Size: " << processSize[i] << " | Block No: " << bestIdx + 1 << endl;
    } else {
      cout << "Process No: " << i + 1 << " | Process Size: " << processSize[i] << " | Not Allocated" << endl;
    }
  }
}

int main() {
  int blockSize[] = {100, 50, 30, 120, 35};
  int processSize[] = {40, 10, 30, 60};
  int m = sizeof(blockSize) / sizeof(blockSize[0]);
  int n = sizeof(processSize) / sizeof(processSize[0]);

  cout << "Best Fit Allocation\n";
  bestFit(blockSize, processSize, m, n);

  return 0;
}