MIM Software interview questions

2nd round - Imperative programming - 45 mins Questions: - How will you explain Java and C++ in easy language to one who doesn't know? - how does garbage collectors work? - inplace transpose of a matrix 3rd round - Algorithm Design - from the given dictionary of words find if by changing one letter at a time such that the new word formed is also in dictionary, can we reach to one other given word. what will the minimum number of switch required? 4th round - OOPS one simple question and asked to tell output and do some modifications in the already written code

What is polymorphism in OOP?