(List<Integer> weights)
| 1 | // Approach 1 |
| 2 | |
| 3 | public static int getMinimumTrips(List<Integer> weights) |
| 4 | { |
| 5 | int size = weights.size(); |
| 6 | int minTrips = 0; |
| 7 | Map<Integer, Integer> freq = new HashMap<>(); |
| 8 | for (int i : weights) |
| 9 | { |
| 10 | freq.put(i, freq.getOrDefault(i, 0) + 1); |
| 11 | } |
| 12 | for (Map.Entry<Integer, Integer> elem : freq.entrySet()) |
| 13 | { |
| 14 | int i = elem.getValue(); |
| 15 | if (i == 1) |
| 16 | return -1; |
| 17 | if (i % 3 == 0) |
| 18 | { |
| 19 | minTrips += i / 3; |
| 20 | } |
| 21 | else if (i % 3 == 2) |
| 22 | { |
| 23 | minTrips += (i - 2) / 3 + 1; |
| 24 | } |
| 25 | else |
| 26 | { |
| 27 | minTrips += (i - 1) / 3 + 1; |
| 28 | } |
| 29 | } |
| 30 | return minTrips; |
| 31 | } |
| 32 | } |
| 33 | // please define the main method |
| 34 |
nothing calls this directly
no outgoing calls
no test coverage detected