The Winner University — LeetCode 2072 Python Solution

EasyLeetCode PremiumDatabase
Problem
#2072
Reading time
3 min

Table schema

SQL
Table: NewYork +-------------+------+ | Column Name | Type | +-------------+------+ | student_id | int | | score | int | +-------------+------+ In SQL, student_id is the primary key for this table. Each row contains information about the score of one student from New York University in an exam.

Example

SQL
+-------------+------+
| Column Name | Type |
+-------------+------+
| student_id  | int  |
| score       | int  |
+-------------+------+
In SQL, student_id is the primary key for this table.
Each row contains information about the score of one student from New York University in an exam.

Python solution

Python
import duckdb
import pandas as pd

def solution(new_york: pd.DataFrame, california: pd.DataFrame) -> pd.DataFrame:
    con = duckdb.connect()
    con.register("NewYork", new_york)
    con.register("California", california)
    return con.execute("""SELECT
    CASE
        WHEN n1.cnt > n2.cnt THEN 'New York University'
        WHEN n1.cnt < n2.cnt THEN 'California University'
        ELSE 'No Winner'
    END AS winner
FROM
    (SELECT COUNT(1) AS cnt FROM NewYork WHERE score >= 90) AS n1,
    (SELECT COUNT(1) AS cnt FROM California WHERE score >= 90) AS n2;""").df()

Complexity

MeasureComplexity
TimeO(n log n) (typical)
SpaceO(n) auxiliary

Related problems

Frequently asked questions

How hard is LeetCode 2072. The Winner University?
LeetCode 2072. The Winner University is rated Easy on LeetCode.
What topics does LeetCode 2072. The Winner University cover?
LeetCode 2072. The Winner University is tagged Database on LeetCode.
Is LeetCode 2072. The Winner University a premium problem?
Yes. LeetCode 2072. The Winner University is a LeetCode Premium problem, so the full statement and test cases require a paid LeetCode subscription.

Stuck on problems like this in a live interview?

Stealth Interview is a desktop app for macOS and Windows. It reads the problem off your screen and returns a working solution with a step-by-step explanation and its time and space complexity — invisible to screen sharing.

Get Stealth Interview