Create software to divide a linked list so that nodes larger than or equal to x appear before nodes less than x. The values of x only need to come after the items less than x if x is present inside the list (see below). The partition element x need not occur between the left and right partitions; it may be anywhere in the "right partition". EXAMPLE Input: Output: 3 -> 5 -> 8 -> 5 -> 10 -> 2 -> 1 [partition= 5] 3 -> 1 -> 2 -> 10 -> 5 -> 5 -> 8

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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.