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Jan 23rd, 2018
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  1. public void backtracking(ArrayList<ArrayList<Integer>> result, ArrayList<Integer> A, ArrayList<Integer> temp, int B, int sum) {
  2. if (sum == B) {
  3. result.add(temp);
  4. return;
  5. }
  6. for (int i = 0; i < A.size(); i++) {
  7. sum += A.get(i);
  8. temp.add(A.get(i));
  9. backtracking(result, A, temp, B, sum);
  10. sum -= A.get(i);
  11. temp.remove(temp.size() - 1);
  12. }
  13. }
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