Leetcode MEDIUM 3054 - Binary Tree Nodes CASE WHEN DSA SQL - Explained by Everyday Data Science
Question: https://leetcode.com/problems/binary-...
SQL Schema:
Create table If Not Exists Tree (N int,P int)
Truncate table Tree
insert into Tree (N, P) values ('1', '2')
insert into Tree (N, P) values ('3', '2')
insert into Tree (N, P) values ('6', '8')
insert into Tree (N, P) values ('9', '8')
insert into Tree (N, P) values ('2', '5')
insert into Tree (N, P) values ('8', '5')
insert into Tree (N, P) values ('5', 'None')
Pandas Schema:
data = [[1, 2], [3, 2], [6, 8], [9, 8], [2, 5], [8, 5], [5, None]]
tree = pd.DataFrame(data, columns=['N', 'P']).astype({'N':'Int64', 'P':'Int64'})
#leetcodesolutions #datascience #sql
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