Have a HashMap<String, TreeMap<Integer, String>> hm to store keys. The value is TreeMap sorted based on timestamp. set, update hm. get, first get the TreeMap based on key, then use floorKey to find the largest key <= timestamp. Time Complexity: set, O(logn). get, O(logn). n...
Time Complexity: O(E+VlogV). It takes O(E) time to construct graph. O(VlogV) time to traverse all the points. Space: O(E+V). O(E) for graph, O(V) for minHeap and Set. AC Java: 1classSolution {2publicintnetworkDelayTime(int[][] times,intN,intK) {3Map<Integer, List<int...
Time Complexity: O() Space Complexity: O() Solution Code: classSolution{public intnetworkDelayTime(int[][]times,int N,int K){if(times==null||times.length==0){return-1;}// graph initMap<Integer,Map<Integer,Integer>>graph=newHashMap<>();for(int[]time:times){if(!graph.containsKey(tim...
Background and motivation This data container is an analogue of LinkedHashMap implementation in Java, which is missing in C#. In the latest release was finally added PriorityQueue which was in Java since 2004. Bridging the gap between AP...
// Network Delay Time// Dijkstra// Time Complexity: O(ElogN), Space Complexity: O(N + E)classSolution{publicintnetworkDelayTime(int[][]times,intN,intK){// adjacency list, map<vertex_id, map<vertex_id, weight>>Map<Integer,Map<Integer,Integer>>graph=newHashMap<>();for(int[]time:ti...