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How to Solve The Number of Employees Which Report to Each Employee Problem
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LeetCode ProblemThe Number of Employees Which Report to Each Employee
Table: Employees For this problem, we will consider a manager an employee who has at least 1 other employee reporting to them. Write a solution to report the ids and the names of all managers, the number of employees who report directly to them, and the average age of the reports rounded to the nearest integer. Return the result table ordered by employee_id. The result format is in the following example.
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Problem Breakdown
Understanding the The Number of Employees Which Report to Each Employee Problem
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Problem Statement
Table: Employees For this problem, we will consider a manager an employee who has at least 1 other employee reporting to them. Write a solution to report the ids and the names of all managers, the number of employees who report directly to them, and the average age of the reports rounded to the nearest integer. Return the result table ordered by employee_id. The result format is in the following example.
EasyProblem #1731
LeetCodeThe Number of Employees Which Report to Each Employee
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Examples
# Example 1
Input
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Output
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# Example 2
Input
Employees table: +-------------+---------+------------+-----+ | employee_id | name | reports_to | age | +-------------+---------+------------+-----+ | 9 | Hercy | null | 43 | | 6 | Alice | 9 | 41 | | 4 | Bob | 9 | 36 | | 2 | Winston | null | 37 | +-------------+---------+------------+-----+
Output
+-------------+-------+---------------+-------------+ | employee_id | name | reports_count | average_age | +-------------+-------+---------------+-------------+ | 9 | Hercy | 2 | 39 | +-------------+-------+---------------+-------------+
# Example 3
Input
Employees table: +-------------+---------+------------+-----+ | employee_id | name | reports_to | age | |-------------|---------|------------|-----| | 1 | Michael | null | 45 | | 2 | Alice | 1 | 38 | | 3 | Bob | 1 | 42 | | 4 | Charlie | 2 | 34 | | 5 | David | 2 | 40 | | 6 | Eve | 3 | 37 | | 7 | Frank | null | 50 | | 8 | Grace | null | 48 | +-------------+---------+------------+-----+
Output
+-------------+---------+---------------+-------------+ | employee_id | name | reports_count | average_age | | ----------- | ------- | ------------- | ----------- | | 1 | Michael | 2 | 40 | | 2 | Alice | 2 | 37 | | 3 | Bob | 1 | 37 | +-------------+---------+---------------+-------------+
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Solve The Number of Employees Which Report to Each Employee — Table: Employees For this problem, we will consider a manager an employee who ha...
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Frequently Asked Questions
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Phantom Code 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.
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Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
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Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
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Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during The Number of Employees Which Report to Each Employee interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like The Number of Employees Which Report to Each Employee during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with The Number of Employees Which Report to Each Employee style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
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Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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