If I use this input [1,3] and click on run code I get [1,null,3] from leetcode while if I submit solution, it gives the correct answer as just [3,1]
Based on the run code solution I assumed that I must create a new node whose value is Null to make a balanced tree. However, I get a wrong answer as the expected answer by the judge is just [3,1]
I am using python. If I do not add a new node with Null/None value to fill in to make it balanced my answer gets accepted.