====== My Solution on Assignment 1 - Problem 2 ======

This is my Solution of Assignment 1 - Problem 2 from the [[http://see.stanford.edu/see/courseinfo.aspx?coll=824a47e1-135f-4508-a5aa-866adcae1111|Computer Science Course CS106A of Prof. Mehran Sahami]] at the [[http://www.stanford.edu|STANFORD University]]. 

<code java StoneMasonKarel.java>

/*
 * File: StoneMasonKarel.java
 * --------------------------
 * The StoneMasonKarel subclass as it appears here does nothing.
 * When you finish writing it, it should solve the "repair the quad"
 * problem from Assignment 1.  In addition to editing the program,
 * you should be sure to edit this comment so that it no longer
 * indicates that the program does nothing.
 */

import stanford.karel.*;

public class StoneMasonKarel extends SuperKarel {

	public void run() {
		// 1st column is allways at starting point
		while( frontIsClear() ) {
			repairColumn();
			walkNext();
		}
		repairColumn();
	}

	private void repairColumn() {
		/* Climbs a Columne and fixes it. Falls back down when done.
		 * facing EAST again.
		 */
		
		turnLeft();
		while( frontIsClear() ) {
			if( noBeepersPresent() ) {
				putBeeper();
			}
			move();
		}
		// Front is now blocked (top on column), drop another beeper if needed.
		if( noBeepersPresent() ) {
			putBeeper();
		}
		turnAround();
		moveToWall();
		turnLeft();
	}


	private void moveToWall() {
		// Moves Karel all the way straight forward until aproaching a wall
		while( frontIsClear() ) {
			move();
		}
	}


	private void walkNext() {
		/* walks 4 steps forward
		 */
		for( int x=0; x < 4 ; x++ ) {
			move();
		}
	}
}

</code>

 --- //[[mail@awerner.homeip.net|Axel Werner]] 2011-02-05 17:40//

{{tag>java karel stanford university cs106 computer science learning programming}}