How to Solve Students and Examinations Problem
Master the Students and Examinations LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
Interview Coder generates complete solutions and debugging hints that you can use while explaining your approach, so you stay calm and in control.
Students and Examinations
Table: Students +---------------+---------+ | Column Name | Type | +---------------+---------+ | student_id | int | | student_name | varchar | +---------------+---------+ student_id is th...
Interview Coder will help you solve this problem in real-time during your interview
✨ Get instant solutions, explanations, and code generation
Understanding the Students and Examinations Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
Table: Students +---------------+---------+ | Column Name | Type | +---------------+---------+ | student_id | int | | student_name | varchar | +---------------+---------+ student_id is the primary key (column with unique values) for this table. Each row of this table contains the ID and the name of one student in the school. Table: Subjects +--------------+---------+ | Column Name | Type | +--------------+---------+ | subject_name | varchar | +--------------+---------+ subject_name is the primary key (column with unique values) for this table. Each row of this table contains the name of one subject in the school. Table: Examinations +--------------+---------+ | Column Name | Type | +--------------+---------+ | student_id | int | | subject_name | varchar | +--------------+---------+ There is no primary key (column with unique values) for this table. It may contain duplicates. Each student from the Students table takes every course from the Subjects table. Each row of this table indicates that a student with ID student_id attended the exam of subject_name. Write a solution to find the number of times each student attended each exam. Return the result table ordered by student_id and subject_name. The result format is in the following example.
Students and Examinations
Related Topics
How Interview Coder Helps
Get real-time assistance for Students and Examinations problems during coding interviews. Interview Coder provides instant solutions and explanations.
Examples
Example inputExample outputConstraints
How Interview Coder Helps with Leetcode Problems
Trust anchors reduce friction for conversion. Reinforce undetectability claims, platform compatibility, user counts, and the free trial to remove perceived risk.
See Interview Coder in Action
Watch how Interview Coder helps solve LeetCode problems during live interviews
Undetectability Checklist
Platform Compatibility
User results and traction
More than 87,000 developers use Interview Coder and early launch metrics showed rapid adoption. Social proof signals that this approach helps real candidates land offers across a range of companies.
Undetectability and technical details
Our native desktop architecture avoids common detection vectors used by browser extensions. We provide a clear checklist so you can run basic checks and confirm the app will be invisible during live interviews.
Platform compatibility and limitations
We work with Zoom, HackerRank, CodeSignal, CoderPad and other web based platforms, with a known list of app version caveats. Check the compatibility note and request a browser link if a specific desktop app is unsupported.
Frequently Asked Questions
Common questions about solving Students and Examinations and using Interview Coder during coding interviews.
Interview Coder generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
Ready to Get Started?
Download Interview Coder now and join thousands of developers who have aced their coding interviews