Qualtrics Intern interview questions

Finding a path from one end of a square of 0 and 1's to the other. Adding the children of a 5 children Binary Tree.

What is the time complexity of various operations for an array? How about for a list? (Odd discrepancy: interviewer insisted there was a general data structure called a "list"; I asked if a linked list was implied, but they didn't seem to comprehend my question so I provided further context on my answers e.g. O(n) for an array and O(1) for a linked list...) I was also asked to solve another problem involving array manipulation; the interviewer tacked on a couple more twists on the problem after solving the first iteration, but there was a lot of miscommunication about the extra modifications. The interviewer allowed me to use whatever language I preferred; however, they told me that they were not very familiar with Python. When I used "del" on a list, they pulled up documentation on Python's stl array and said I wasn't writing correct syntax...