Asked me a question about finding the middle of Java's doubly linked list, finding the middle of Custom Linked List which didn't have the size method. Reversing a String. One SQL question about using Joins to get matching data from Employee and Manager table. Then one problem solving question about handshakes where 2 people was 1 handshake, 3 people was 3 handshakes, 4 people was 6 handshakes, etc....