Indeed Full Time SOftware Engineer interview questions

Met them at a college career fair, and then was invited to interview with them on campus. In this initial interview, they asked a fairly difficult question regarding strings that took almost the entire interview time of one hour. After this interview, I was invited to take a coding challenge on hacker rank. This coding challenge was 75 minutes long and had two coding questions involving determining if parentheses are balanced with a stack, and another question regarding adjacency lists and minimum spanning trees.