LeetCode 579: Find Cumulative Salary of an Employee Solution

Master LeetCode problem 579 (Find Cumulative Salary of an Employee), a hard challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

579. Find Cumulative Salary of an Employee

Hard

Database

Problem Explanation

Explanation:

To find the cumulative salary of an employee, we can treat the salary as a directed graph where each employee is a node and the salary is the weight of the edge from the employee's manager to the employee. We can perform a Depth First Search (DFS) starting from the given employee id to calculate the cumulative salary by summing up the salaries of all employees in the subtree rooted at the given employee.

Algorithm:

Create a map to store the salary of each employee.
Create a map to store the direct reports of each employee.
Perform a DFS starting from the given employee id:
- For each employee, add their salary to the cumulative salary.
- Recursively call the DFS on each direct report of the current employee.
Return the cumulative salary.

Time Complexity:

The time complexity of this algorithm is O(N), where N is the total number of employees.

Space Complexity:

The space complexity of this algorithm is O(N) for the salary map and direct reports map.

Solution Code

class Solution {
    public int getImportance(List<Employee> employees, int id) {
        Map<Integer, Employee> employeeMap = new HashMap<>();
        for (Employee emp : employees) {
            employeeMap.put(emp.id, emp);
        }
        return getImportanceDFS(employeeMap, id);
    }
    
    private int getImportanceDFS(Map<Integer, Employee> employeeMap, int id) {
        Employee employee = employeeMap.get(id);
        int totalSalary = employee.importance;
        for (int subordinateId : employee.subordinates) {
            totalSalary += getImportanceDFS(employeeMap, subordinateId);
        }
        return totalSalary;
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 579 (Find Cumulative Salary of an Employee)?

This page provides optimized solutions for LeetCode problem 579 (Find Cumulative Salary of an Employee) in Java, C++, and Python, along with a detailed explanation and an interactive code editor to test your code.

What is the time complexity of LeetCode 579 (Find Cumulative Salary of an Employee)?

The time complexity for LeetCode 579 (Find Cumulative Salary of an Employee) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 579 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 579 in Java, C++, or Python.

Back to LeetCode Solutions