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The following program moves a robot in a grid of squares. The initial position and direction of the robot is shown below. Click on the grid to move the robot to the final position after the program is run. You must click within the box to rotate the robot to the correct final direction (click near the top of the box to rotate up, etc...) Feel free to move the robot along as you follow the code. reset robot PROCEDURE DoSomething (n) if( n 2 1) 4 { MOVE_FORWARD () 6 else 8 if( n > 3 ) 10 { 11 MOVE_FORWARD ( ) 12 13 14 15 16 17 ROTATE RIGHT () 18 REPEAT 2 TIMES 19 DoSomething (i) MOVE FORWARD () 20 21 22 ROTATE LEFT() 23 i F i + 1 24 25 MOVE FORWARD ()

The following program moves a robot in a grid of squares. The initial position and direction of the robot is shown below. Click on the grid to move the robot to the final position after the program is run. You must click within the box to rotate the robot to the correct final direction (click near the top of the box to rotate up, etc...) Feel free to move the robot along as you follow the code. reset robot PROCEDURE DoSomething (n) if( n 2 1) 4 { MOVE_FORWARD () 6 else 8 if( n > 3 ) 10 { 11 MOVE_FORWARD ( ) 12 13 14 15 16 17 ROTATE RIGHT () 18 REPEAT 2 TIMES 19 DoSomething (i) MOVE FORWARD () 20 21 22 ROTATE LEFT() 23 i F i + 1 24 25 MOVE FORWARD ()

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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What is the answer to this algorithm
The following program moves a robot in a grid of squares. The initial position and direction of the robot is shown below. Click on the grid to move the robot to the final position after the program is run. You must click within the box to rotate the robot to the correct final direction (click near the top of the box to rotate up, etc...) Feel free to move the robot along as you follow the code. reset robot PROCEDURE DoSomething (n) { 3. if( n 2 1 ) 4 { MOVE FORWARD () } else 8 { 9. if( n > 3) 10 { 11 MOVE_FORWARD( ) 12 13 } 14 15 16 i + 2 17 ROTATE RIGHT() 18 REPEAT 2 TIMES 19 { DoSomething (i) MOVE_FORWARD () 20 21 22 ROTATE_LEFT() 23 i F i + 1 24 } 25 MOVE_FORWARD ( ) 26
Transcribed Image Text:The following program moves a robot in a grid of squares. The initial position and direction of the robot is shown below. Click on the grid to move the robot to the final position after the program is run. You must click within the box to rotate the robot to the correct final direction (click near the top of the box to rotate up, etc...) Feel free to move the robot along as you follow the code. reset robot PROCEDURE DoSomething (n) { 3. if( n 2 1 ) 4 { MOVE FORWARD () } else 8 { 9. if( n > 3) 10 { 11 MOVE_FORWARD( ) 12 13 } 14 15 16 i + 2 17 ROTATE RIGHT() 18 REPEAT 2 TIMES 19 { DoSomething (i) MOVE_FORWARD () 20 21 22 ROTATE_LEFT() 23 i F i + 1 24 } 25 MOVE_FORWARD ( ) 26
Expert Solution
Step 1

The initial value of i=2 and the loop executes two times for i=2 and i=3 because there is a statement that Repeat 2 times.

For i=2:

It calls DoSomething(2), then 2>=1. So, it moves forward, again it moves forward, then rotates left.

Then i value becomes 2+1= 3 and then move forwards.

For i=3:

It calls DoSomething(3), then 3>=1. So, it moves forward, again it moves forward, then rotates left.

The value of i becomes 4 and then move forward. 

 

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