Wells Fargo

Task 1

tags: Data Modeling, Entity Relationship Diagramming, System Design
Develop a data model for a new investment management system

The system will help manage multiple financial advisors’ clients.
Financial advisors must be able to create, update, and remove clients.
Each financial advisor can have numerous clients.
Financial advisors will be using the system during standard business hours from 9 to 5 on weekdays.
Each client will have a portfolio.
Client portfolios may contain zero or more securities.
Financial advisors must be able to create, update, and remove securities from client portfolios.
Every security has a name, a category, a purchase date, a purchase price, and a quantity.
The system must have 99% uptime.
The system must expose a React dashboard.
The system’s backend must use the Spring framework for Java.
The system must store data in a relational database.
The system must be highly scalable.

Task 2

Implement your data model using the JPA

Questions

21

 /**
 * Definition for singly-linked list.
 * public class ListNode {
 *     int val;
 *     ListNode next;
 *     ListNode() {}
 *     ListNode(int val) { this.val = val; }
 *     ListNode(int val, ListNode next) { this.val = val; this.next = next; }
 * }
 */
 class Solution {
     public ListNode mergeTwoLists(ListNode list1, ListNode list2) {
     // Base case: if either list is null, return the other list
     if (list1 == null) {
         return list2;
     } else if (list2 == null) {
         return list1;
     }

     // Recursive case: compare the values at the current nodes of both lists
     if (list1.val < list2.val) {
         // If the value in l1 is smaller, merge the rest of l1 with the remaining nodes in l2
         list1.next = mergeTwoLists(list1.next, list2);
         return list1;
     } else {
         // If the value in l2 is smaller, merge the rest of l2 with the remaining nodes in l1
         list2.next = mergeTwoLists(list1, list2.next);
         return list2;
     } 
     }
 }