The map-reduce framework is quite useful for creating inverted indices on a setof documents. An inverted index stores for each word a list of all documentIDs that it appears in (offsets in the documents are also normally stored, butwe shall ignore them in this question).For example, if the input document IDs and contents are as follows:1: data clean2: data base3: clean basethen the inverted lists woulddata: 1, 2clean: 1, 3base: 2, 3Give pseudocode for map and reduce functions to create inverted indices on agiven set of files (each file is a document).Assume the document IDis availableusing a function context.getDocumentID(), and the map function is invokedonce per line of the document. The output inverted list for each word should bea list of document IDs separated by commas. The document IDs are normallysorted, but for the purpose of this question you do not need to bother to sortthem.

Draw what a Skip List could look like after you insert 3, 10,5, 18, 14,9,4 in that order. There can be many possible structures of such a Skip List since it is a randomized data structure. The same sequence of inserts/deletes may produce different structures depending on the outcome of random coin flips.

As a student who is currently doing CMPG22, you have been asked to analyse, model and design a LinkedList System that will be used to perform some manipulations on the data list by high school students and their instructors. The list will be given to the system as input and the user will perform some actions on the data as follows: 1. Return the first element in the list, 2. return the last element in the list, 3. remove the head and return the object stored in the removed node, 4. add a new element to the front of the list, 5. add a new element to the end of the list, 6. delete the first item in the list with the SAME VALUE, 7. determine whether a specific object is present (according to value), 8. receives a second linked list as a parameter and will return a third list containing all the elements of the parameter list which are not present in the calling list and lastly, 9. receive the second linked list as a parameter, and return a new linked list consisting of both the parameter…