Why change up the style of the answer in such a drastic way vs eariler? It only adds to confusion with no benefit.

Here's something similar to the examples we've seen this far. Please note similarity in structure to sliding window.

Arrays.sort(intervals, (a,b)->Integer.compare(a[0], b[0])); PriorityQueue minHeap = new PriorityQueue(intervals.length, (a, b) -> Integer.compare(a[1], b[1])); int minRooms = 0; for(int[] interval : intervals){ if(!minHeap.isEmpty() && interval[0]>=minHeap.peek()[1]){ minHeap.poll(); } minHeap.offer(interval); minRooms = Math.max(minHeap.size(), minRooms); } return minRooms;