4. Using closed hashing with double hashing to resolve collisions insert the following keys into a table with 13 slots, numbered 0 through 12. The hash functions to be used are H1(k) k(mod13) and H2(k) Rev(k+1)(mod9) The function Rev reverses the decimal digits like Rev(376) 673. Show the hash table after all eight keys have been inserted. Be sure to indicate how Hl and H2 are used. Keys: 2,8,31,33,19,18,66,30. 5.Optional extra credit for credit do
