Update getMinPlatforms.py

Author: devAmoghS

getMinPlatforms.py

@@ -1,3 +1,11 @@
+# Given the arrival and departure times of all trains 
+# that reach a railway station, the task is to find the 
+# minimum number of platforms required for the railway 
+# station so that no train waits. 
+
+# We are given two arrays that represent the arrival and 
+# departure times of trains that stop.
+
 def getMinPlatforms(arr, dep):
   if len(arr) != len(dep):
     print("Wrong inputs given...")