In this guide, you will get 196. Delete Duplicate Emails LeetCode Solution with the best time and space complexity. The solution to Delete Duplicate Emails problem is provided in various programming languages like C++, Java, and Python. This will be helpful for you if you are preparing for placements, hackathons, interviews, or practice purposes. The solutions provided here are very easy to follow and include detailed explanations.
+————-+———+
| Column Name | Type |
+————-+———+
| id | int |
| email | varchar |
+————-+———+
id is the primary key (column with unique values) for this table.
Each row of this table contains an email. The emails will not contain uppercase letters.
Write a solution to delete all duplicate emails, keeping only one unique email with the smallest id.
For SQL users, please note that you are supposed to write a DELETE statement and not a SELECT one.
For Pandas users, please note that you are supposed to modify Person in place.
After running your script, the answer shown is the Person table. The driver will first compile and run your piece of code and then show the Person table. The final order of the Person table does not matter.
The result format is in the following example.
Example not found
Constraints not found
Complexity Analysis
Time Complexity: Google AdSense
Space Complexity: Google Analytics
196. Delete Duplicate Emails LeetCode Solution in C++
DELETE P2
FROM Person AS P1
INNER JOIN Person AS P2
ON (P1.email = P2.email)
WHERE P1.id < P2.id; /* code provided by PROGIEZ */
196. Delete Duplicate Emails LeetCode Solution in Java
N/A // code provided by PROGIEZ
196. Delete Duplicate Emails LeetCode Solution in Python
