A vector should be people's default data structure, but this presentation is bizarre, because it is based on looping through every element of a vector or a list to find the element you want.
This is never a scenario that should happen, because if you are going to retrieve an arbitrary element it should be in a hash map or sorted map.
This is never a scenario that should happen, because if you are going to retrieve an arbitrary element it should be in a hash map or sorted map.