public static void main(String[] args) { long start = System.currentTimeMillis(); Scanner input = new Scanner(System.in); int numberOfTestCases = input.nextInt(); ArrayList<Integer> order = new ArrayList<Integer>(numberOfTestCases); int previousKey = -1; int previousValue = 0; int cycleNumber = 0; Map<Integer, Integer> testCases = new TreeMap<Integer, Integer>(); for (int i = 0; i < numberOfTestCases; i++) { int numberOfCycles = input.nextInt(); testCases.put(numberOfCycles, 1); order.add(numberOfCycles); } for (Map.Entry<Integer, Integer> entry : testCases.entrySet()) { int numberOfCycles; int initialHeight; if (previousKey == -1) { numberOfCycles = entry.getKey(); initialHeight = entry.getValue(); } else { numberOfCycles = entry.getKey() - previousKey; initialHeight = previousValue; } for (int i = 0; i < numberOfCycles; i++) { if (cycleNumber % 2 == 0) { initialHeight *= 2; } else { initialHeight += 1; } cycleNumber++; } entry.setValue(initialHeight); previousKey = entry.getKey(); previousValue = initialHeight; } for (Integer element : order) { System.out.println(testCases.get(element)); } long elapsed = System.currentTimeMillis() - start; System.out.println("time: " + elapsed); }
static int lonelyInteger(int[] arr) { Map<Integer, Integer> occurrences = new HashMap<>(); for (int value : arr) { boolean alreadyExist = occurrences.containsKey(value); if (!alreadyExist) { occurrences.put(value, 0); } occurrences.put(value, occurrences.get(value) + 1); } int result = 0; for (java.util.Map.Entry<Integer, Integer> entry : occurrences.entrySet()) { if (entry.getValue().equals(1)) { result = entry.getKey(); } } return result; }