Question

Consider your ID as an array of 9 elements. Example ID: 201710340 arr 2 0 1 7 1 0 3 4 0 Consider a Linear Queue implemented using an array of length 6. Show the contents of the queue after executing each of the following segments of code in order. a. lengueuelarg[0]); Dengueue (arr[1]); qenqueue (arr[2]); Tienqueue (arr.[3]); q b. Tadegueue(); dequeue(); q c. Lingueue (arn[4]); q: enqueue (arm[5]); q d. What is the output of the following statements? System.out.println(q:size()); System.out.println(bifirst()); e. Explain what will happen after executing the following statement. quenqueue (arr[6]); q f. What is the performance (in Big-O notation) of each of the previous methods? Explain.

Answer 1

a. The contents of the queue after executing this segment of code would be: arr[0] arr[1] arr[2] arr[3]

b. The contents of the queue after executing this segment of code would be: arr[1] arr[2] arr[3]

c. The contents of the queue after executing this segment of code would be: arr[1] arr[2] arr[3] arr[4] arr[5]

d. The output of System.out.println(q:size()) would be the size of the queue after the previous operations have been executed, which would be 5. The output of System.out.println(q:first()) would be the value of the element at the front of the queue after the previous operations have been executed, which would be arr[1].

e. The statement quenqueue(arr[6]) would try to enqueue a new element in the queue, but the queue is already at its maximum capacity of 6 elements. This would cause an overflow error and the program would terminate.

f.

The performance of enqueue() and dequeue() methods is O(1) as they operate on the front and rear indices of the queue array without iterating over the entire array.

The performance of size() method is also O(1) as it simply returns the value of the size variable which is updated with every enqueue or dequeue operation.

The performance of first() method is also O(1) as it simply returns the value of the element at the front index of the queue array without iterating over the entire array.

Step-by-step explanation: