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A robot moves around a 2D grid. At the start, it is at [0, 0], facing east. It is controlled by a sequence of instructions: DVA means take one step forwards in the current direction. means turn 90 degrees anticlockwise. means turn 90 degrees clockwise. Your job is to process the instructions and return the final position of the robot. Example For example, if the robot is given the sequence of instructions ..<.<.. then: Step 1: It still faces east, and is at [1, 0].

A robot moves around a 2D grid. At the start, it is at [0, 0], facing east. It is controlled by a sequence of instructions: DVA means take one step forwards in the current direction. means turn 90 degrees anticlockwise. means turn 90 degrees clockwise. Your job is to process the instructions and return the final position of the robot. Example For example, if the robot is given the sequence of instructions ..<.<.. then: Step 1: It still faces east, and is at [1, 0].

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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A robot moves around a 2D grid. At the start, it is at [0, 0], facing east. It is controlled by a sequence of instructions: means take one step forwards in the current direction. means turn 90 degrees anticlockwise. means turn 90 degrees clockwise. Your job is to process the instructions and return the final position of the robot. Example For example, if the robot is given the sequence of instructions ..<.<.. then: • Step 1: . It still faces east, and is at [1, 0]. • Step 2: It still faces east, and is at [2, 0]. • Step 3: • Step 4: It now faces north, and is still at [2, 0]. It still faces north, and is at [2, 1]. • Step 5: < It now faces west, and is still at [2, 1] Step 6: It still faces west, and is now at [1, 1]. So, track_robot ("..<.<.") returns [1, 1].
Transcribed Image Text:A robot moves around a 2D grid. At the start, it is at [0, 0], facing east. It is controlled by a sequence of instructions: means take one step forwards in the current direction. means turn 90 degrees anticlockwise. means turn 90 degrees clockwise. Your job is to process the instructions and return the final position of the robot. Example For example, if the robot is given the sequence of instructions ..<.<.. then: • Step 1: . It still faces east, and is at [1, 0]. • Step 2: It still faces east, and is at [2, 0]. • Step 3: • Step 4: It now faces north, and is still at [2, 0]. It still faces north, and is at [2, 1]. • Step 5: < It now faces west, and is still at [2, 1] Step 6: It still faces west, and is now at [1, 1]. So, track_robot ("..<.<.") returns [1, 1].
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