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Write a method IN JAVA, createArrayOfLL that takes a file of words, one in each

ID: 3601339 • Letter: W

Question

Write a method IN JAVA, createArrayOfLL that takes a file of words, one in each line and creates an array of linked list nodes as follows.

(a) Create an array of 26 linked lists

(b) Open the file and Insert each word into the array based on its first letter, eg: any word that begins with ‘a’ goes to A[0] list etc..

(c) Return the reference to the array of linked lists You must consider ALL cases . You must write reasonable comments to describe your algorithm.

You may assume public fields for each node, data and next. There WILL NOT be any partial credit for this problem.

The question will be graded ALL or NOTHING. [Use extra paper, if necessary to write the answer].

Node class is defined as follows.

Public Node[] createArrayOfLL(String inputfile) {

Explanation / Answer

Please find my implementation.

public Node[] createArrayOfLL(String inputfile) throws IOException {

// opening file

FileReader fr = new FileReader(inputfile);

BufferedReader br = new BufferedReader(fr);

String line;

// creating array of linked list

Node[] array = new Node[26];

// reading line by line

while((line = br.readLine()) != null) {

// getting first character

char c = Character.toLowerCase(line.trim().charAt(0));

// creating a node

Node newNode = new Node(line);

// getting head node for index of current character

Node head = array[c - 97];

newNode.next = head;

array[c-97] = newNode;

}

return array;

}

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