solutions/0690-employee-importance.js

/**
 * 690. Employee Importance
 * https://leetcode.com/problems/employee-importance/
 * Difficulty: Medium
 *
 * You have a data structure of employee information, including the employee's unique ID,
 * importance value, and direct subordinates' IDs.
 *
 * You are given an array of employees employees where:
 * - employees[i].id is the ID of the ith employee.
 * - employees[i].importance is the importance value of the ith employee.
 * - employees[i].subordinates is a list of the IDs of the direct subordinates of the ith employee.
 *
 * Given an integer id that represents an employee's ID, return the total importance value of this
 * employee and all their direct and indirect subordinates.
 */

/**
 * Definition for Employee.
 * function Employee(id, importance, subordinates) {
 *     this.id = id;
 *     this.importance = importance;
 *     this.subordinates = subordinates;
 * }
 */

/**
 * @param {Employee[]} employees
 * @param {number} id
 * @return {number}
 */
var GetImportance = function(employees, id) {
  const map = new Map(employees.map(e => [e.id, e]));
  return dfs(id);

  function dfs(id) {
    if (!map.has(id)) return 0;
    const e = map.get(id);
    return e.importance + e.subordinates.reduce((sum, id) => sum + dfs(id), 0);
  }
};