Oracle Application-Engineer interview questions

It was on campus interview. Round 1: was a test on aptitude, CSE basics(ds,algo,dbms), flowchart. total 100 minutes. Round 2: technical round: discussion of c++, java, information security, coding questions from sorting, binary tree. Round 3: technical :easy system design question, one string substring pattern question, matrix multiplication. Round 4: technical+managerial: basic managerial questions, one easy coding question, one coding ques. on subset sum.