    ‘Sentence 1: How’ is’ Hashmap~ “in” Java.   implemented internally? What are the’ pros and.  cons to use it? What.are the complexities: it  provides for insert, delete and lookup’ Y    Sentence 2: How are the C++ sree map   and Java HashMap’ implemented to nama  (1) ‘average. - time ~ ity « for.  operations as the ‘size the bah. tle  increases? f                   