Which of the following represents the tree below correctly?       index info left right 0 A 1 2 1 B -1 -1 2 C 3 4 3 D -1 -1 4 E -1 -1     index info left right 0 A 1 2 1 B -1 3 2 C -1 4 3 D -1 -1 4 E -1 -1     index info left right 0 A 1 2 1 B 0 -1 2 C 3 4 3 D -1 -1 4 E -1 -1     index info left right 0 A 1 2 1 B -1 -1 2 C 3 4 3 D -1 4 4 E -1 -1

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Hash Table

A hash table also called a hash map, is a data structure that maps key-value pairs. The hash table can be used in complex systems to provide fast access and compact storage. A hash table is a structure that stores data in an abstract data type kind of associative array. It keeps data in an array format, with a distinct index value for every data value. If the index of the required data is known, then the data can be accessed very easily.