Question & Answer: R​equest solve the following problem on "Alogrithms" The referred book is "Introduction to Alogrithms" by Th…..

R​equest solve the following problem on “Alogrithms” The referred book is “Introduction to Alogrithms” by Thomas Cormen

b) Using Fig. 6.4 in page 137 (page 161 in third edition of the book as a model, illustrate the operation of HEAPSORT on the array A 5,12,4,8,10,11,9,7,6]. 14 9 63de14176cd9113000fa4ccedd 9113000fa4cceddb 1175 A 1 2 3 47 8 9 10 14 16 Figure 6.4 The operation of HEAPSORT. (a) The max-hcap data structureust after BUILD-MAX HEAP has buil in line1. (b)-G) The max-heap just after each call of MAX-HEAPIFY in line 5, showing the value of at that time. Only lightly shaded nodes remain in the heap、(k) The resulting sorted aray A

b) Using Fig. 6.4 in page 137 (page 161 in third edition of the book as a model, illustrate the operation of HEAPSORT on the array A 5,12,4,8,10,11,9,7,6]. 14 9 63de14176cd9113000fa4ccedd 9113000fa4cceddb 1175 A 1 2 3 47 8 9 10 14 16 Figure 6.4 The operation of HEAPSORT. (a) The max-hcap data structureust after BUILD-MAX HEAP has buil in line1. (b)-G) The max-heap just after each call of MAX-HEAPIFY in line 5, showing the value of at that time. Only lightly shaded nodes remain in the heap、(k) The resulting sorted aray A

Expert Answer

 

The steps are as follows:

The data is 5,12,4,8,10,11,9,7,6

We will go for max heap. The node will be lower than the nodes.

The tree created will be

Step 1

5

12           4

8     10   11        9

7       6

In this step our array is 5,12,4,8,10,11,9,7,6

Step 2. We will apply heapify to (9/2-1)= 3 index of the array

5

12           4

8     10   11        9

7       6

We don’t have to do any thing as 8 is ok.
array is 5,12,4,8,10,11,9,7,6

Step 3 . We will apply heapify to array index = 2, i.e 4

5

12           11

8     10   4        9

7       6

We have to swap 4 and 11

The array becomes 5,12,11,8,10,4,9,7,6

Step 4 We will apply heapify to array index 1 i.e 12

5

12           11

8     10   4        9

7       6

We don’t have to do anything as 12 is ok
Our array becomes 5,12,11,8,10,4,9,7,6

Step 5 We will apply heapify to array index 0 i.e 5

12

5           11

8     10   4        9

7       6

We need to swap 12 and 5 .
Our array becomes 12,5,11,8,10,4,9,7,6

Step 5. We need to check the tree now.

12

5           11

8     10   4        9

7       6

Step 6 We need to do certain adjustments now like swapping 5 and 10 so our tree bexomes:

12

10           11

8     5   4        9

7       6

our array becomes 12,10,11,8,5,4,9,7,6   (It is a max heap as all the node values are more than their children

Step 7 Now taking the root out of the tree we get:

11

10           9

8     5   4

7       6

12

Repeating step 7 we get

10

8           9

7     5   4

6

11 12

Repeating step 7 we get

9

8           4

7     5

6

10 11 12

Repeating step 7 we get

8

7           4

6     5

 

9 10 11 12

Repeating step 7 we get

7

6           4

5

 

8,9 10 11 12

Repeating step 7 we get

6

5           4

7 8 9 10 11 12

Repeating step 7 we get

5

4

6 7 8 9 10 11 12

Repeating step 7 we get

4

 

5 6 7 8 9 10 11 12

Repeating step 7 we get

4 5 6 7 8 9 10 11 12 (Our Sorted array)

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