1-Design a vector class (like std vector - not too difficult, just need to know) 2-Find if a subset of an array sums to a given sum (know about memoization techniques if solving recursively) 3-Find 10 top most frequent words in a huge file in linear time (mind also memory allocations). Also provide a multithreaded solution as an extra part to this question. 4-how vtables work in C++? 5-how memory mapped IO works? 6-produces consumer problem (know about conditional variables) 7-design a cyclic array
