It is guaranteed thatFreqStack.pop()won't be called if the stack has zero elements. The total number ofFreqStack.pushcalls will not exceed10000in a single test case. The total number ofFreqStack.popcalls will not exceed10000in a single test case. The total number ofFreqStack.pushandFreqS...
Check count of items in Array using jquery, check count of items in Array using jquery [duplicate] Closed 5 years ago. I am following this Counting the occurrences / frequency of array elements to find the occurrence of each item in the array. If any item occurs more than or equal to 3...
Runtime is O(N), space is O(N) as well. But HashMap and HashSet are not as fast as simple array mapping. classSolution {publicintmaxEqualFreq(int[] nums) {intres =nums.length;//m1: number -> its frequencyMap<Integer, Integer> m1 =newHashMap<>();//m2: frequency -> all number...
class CacheData { String imgUrlAsKey; String bitmap; CacheData(String imgUrlAsKey, String bitmap) { this.imgUrlAsKey = imgUrlAsKey; this.bitmap = bitmap; } } public class ImageCache { Deque<CacheData> q = new LinkedList<>(); Map<String, CacheData> map = new HashMap<>(); int ...