Update and rename free_rooms.py to non_overlapping_invervals.py

heaps/free_rooms.py

@@ -1,30 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-# author: bt3gl
-
-
-'''
-Given an array of meeting time intervals intervals 
-where intervals[i] = [starti, endi], return the 
-minimum number of conference rooms required.
-'''
-
-def min_meeting_rooms(intervals):
-        
-        if not intervals:
-            return 0
-
-        free_rooms = []
-
-        intervals.sort(key= lambda x: x[0])
-
-        heapq.heappush(free_rooms, intervals[0][-1])
-
-        for i in intervals[1:]:
-
-            if free_rooms[0] <= i[0]:
-                heapq.heappop(free_rooms)
-            
-            heapq.heappush(free_rooms, i[1])
-        
-        return len(free_rooms)

heaps/non_overlapping_invervals.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
+
+def non_overlapping_invervals(intervals):
+        
+        if not intervals:
+            return 0
+
+        result = []
+        intervals.sort(key=lambda x: x[0])
+        heapq.heappush(result, intervals[0][-1])
+
+        for interval in intervals[1:]:
+
+            if result[0] <= interval[0]:
+                heapq.heappop(result)
+            
+            heapq.heappush(result, interval[1])
+        
+        return len(result)