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| public int getMaximumEatenDishCount(int N, int[] D, int K) { | |
| // N must be less than D.length right? | |
| if (N > D.length) { | |
| throw new IllegalArgumentException("N must be less than or equal to D.length"); | |
| } | |
| int count = 0; | |
| // LRU cache to store the last K dishes | |
| Map<Integer, Integer> lastK = new LinkedHashMap<Integer, Integer>(K, 0.75f, false) { | |
| @Override | |
| protected boolean removeEldestEntry(Map.Entry<Integer, Integer> eldest) { | |
| return size() > K; | |
| } | |
| }; | |
| for(int i = 0; i < N; i++) { | |
| if (lastK.containsKey(D[i])) { | |
| continue; | |
| } | |
| count++; | |
| lastK.put(D[i], 1); | |
| } | |
| return count; | |
| } |
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