Oracle Sneior Software Engineer interview questions

Round 1 - Theoretical questions related to java, coding question - create a class for a n-ary tree with weights for each node and write the code to calculate the minimum weight from root to leaf, an SQL question involving table joins and sorting on some column. Round 2 - Coding questions - 1. For an array containing heights of n dolls, find how many different sets can be made when a smaller doll can fit into a larger doll. 2. Max water trapped in between buildings problem. DB question - Delete duplicate rows from a table Even though my both rounds went well, the recruiter ghosted me and stopped replying to email and LinkedIn messages.