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Mr. Gregory White
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Math Homework
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PROBLEM ONE: MARS ROVERS Squads of robotic rovers are
Customer Question
PROBLEM ONE: MARS ROVERS
Squads of robotic rovers are to be landed by NASA on a plateau on Mars. This plateau, which is curiously rectangular, must be navigated by the rovers so that their on board cameras can get a complete view of the surrounding terrain to send back to Earth.
A rover's position and location is represented by a combination of x and y coordinates and a letter representing one of the four cardinal compass points. The plateau is divided up into a grid to simplify navigation. An example position might be 0, 0, N, which means the rover is in the bottom left corner and facing North.
In order to control a rover, NASA sends a simple string of letters. The possible letters are 'L', 'R' and 'M'. 'L' and 'R' makes the rover spin 90 degrees left or right respectively, without moving from its current spot. 'M' means move forward one grid point, and maintain the same heading.
Assume that the square directly North from (x, y) is (x, y+1).
INPUT:
The first line of input is the upperright coordinates of the plateau, the lowerleft coordinates are assumed to be 0,0.
The rest of the input is information pertaining to the rovers that have been deployed. Each rover has two lines of input. The first line gives the rover's position, and the second line is a series of instructions telling the rover how to explore the plateau.
The position is made up of two integers and a letter separated by spaces, corresponding to the x and y coordinates and the rover's orientation.
Each rover will be finished sequentially, which means that the second rover won't start to move until the first one has finished moving.
OUTPUT
The output for each rover should be its final coordinates and heading.
INPUT AND OUTPUT
Test Input:
5 5
1 2 N
LMLMLMLMM
3 3 E
MMRMMRMRRM
Expected Output:
1 3 N
5 1 E
Submitted:
1 year ago.
Category:
Math Homework
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Customer:
replied 1 year ago.
I need the code in java and the user has to actually input the x,y and directions.
Expert:
Ryan
replied 1 year ago.
Hi,
Welcome! Thank you for using the site.
I'll be happy to help you with this, but I have a question about the requirements. What is supposed to happen if the rover attempts to move beyond the boundaries of the grid? Should the instruction be ignored so that the rover remains within the grid, or should an error be generated?
Thanks,
Ryan
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