184. Department Highest Salary LeetCode Solution

In this guide, you will get 184. Department Highest Salary LeetCode Solution with the best time and space complexity. The solution to Department Highest Salary 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.

Table of Contents

1. Problem Statement
2. Complexity Analysis
3. Department Highest Salary solution in C++
4. Department Highest Salary solution in Java
5. Department Highest Salary solution in Python
6. Additional Resources

Problem Statement of Department Highest Salary

Table: Employee

+————–+———+
| Column Name | Type |
+————–+———+
| id | int |
| name | varchar |
| salary | int |
| departmentId | int |
+————–+———+
id is the primary key (column with unique values) for this table.
departmentId is a foreign key (reference columns) of the ID from the Department table.
Each row of this table indicates the ID, name, and salary of an employee. It also contains the ID of their department.

Table: Department

+————-+———+
| Column Name | Type |
+————-+———+
| id | int |
| name | varchar |
+————-+———+
id is the primary key (column with unique values) for this table. It is guaranteed that department name is not NULL.
Each row of this table indicates the ID of a department and its name.

Write a solution to find employees who have the highest salary in each of the departments.
Return the result table in any order.
The result format is in the following example.

Example not found

Constraints not found

Complexity Analysis

• Time Complexity: Google AdSense
• Space Complexity: Google Analytics

184. Department Highest Salary LeetCode Solution in C++

WITH
  EmployeesWithMaxSalaryInDepartment AS (
    SELECT
      Department.name AS department,
      Employee.name AS employee,
      Employee.salary,
      MAX(Employee.salary) OVER(
        PARTITION BY Employee.departmentId
      ) AS max_salary
    FROM Employee
    LEFT JOIN Department
      ON (Employee.departmentId = Department.id)
  )
SELECT
  department AS Department,
  employee AS Employee,
  salary AS Salary
FROM EmployeesWithMaxSalaryInDepartment
WHERE salary = max_salary;
/* code provided by PROGIEZ */

184. Department Highest Salary LeetCode Solution in Java

N/A
// code provided by PROGIEZ

184. Department Highest Salary LeetCode Solution in Python

N/A
 # code by PROGIEZ

Additional Resources

• Explore all LeetCode problem solutions at Progiez here
• Explore all problems on LeetCode website here

Happy Coding! Keep following PROGIEZ for more updates and solutions.