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Commit 6d9c8ca

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Immutable Classes ,Sets & hashsets
1 parent 3fa32eb commit 6d9c8ca

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‎CODE/074_Immutable-classes/.idea/misc.xml‎

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‎CODE/074_Immutable-classes/.idea/modules.xml‎

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‎CODE/074_Immutable-classes/.idea/workspace.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<module type="JAVA_MODULE" version="4">
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>
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import java.util.HashMap;
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import java.util.Map;
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public class Location {
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private final int locationID;
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private final String description;
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private final Map<String, Integer> exits;
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public Location(int locationID, String description, Map<String, Integer> exits) {
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this.locationID = locationID;
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this.description = description;
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if(exits != null) {
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this.exits = new HashMap<String, Integer>(exits);
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} else {
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this.exits = new HashMap<String, Integer>();
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}
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this.exits.put("Q", 0);
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}
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// public void addExit(String direction, int location) {
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// exits.put(direction, location);
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// }
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public int getLocationID() {
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return locationID;
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}
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public String getDescription() {
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return description;
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}
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public Map<String, Integer> getExits() {
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return new HashMap<String, Integer>(exits);
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}
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}
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Scanner;
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public class Main {
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private static Map<Integer, Location> locations = new HashMap<Integer, Location>();
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public static void main(String[] args) {
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// Change the program to allow players to type full words, or phrases, then move to the
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// correct location based upon their input.
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// The player should be able to type commands such as "Go West", "run South", or just "East"
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// and the program will move to the appropriate location if there is one. As at present, an
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// attempt to move in an invalid direction should print a message and remain in the same place.
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//
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// Single letter commands (N, W, S, E, Q) should still be available.
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Scanner scanner = new Scanner(System.in);
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Map<String, Integer> tempExit = new HashMap<String, Integer>();
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locations.put(0, new Location(0, "You are sitting in front of a computer learning Java",tempExit));
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tempExit = new HashMap<String, Integer>();
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tempExit.put("W", 2);
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tempExit.put("E", 3);
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tempExit.put("S", 4);
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tempExit.put("N", 5);
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locations.put(1, new Location(1, "You are standing at the end of a road before a small brick building",tempExit));
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tempExit = new HashMap<String, Integer>();
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tempExit.put("N", 5);
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locations.put(2, new Location(2, "You are at the top of a hill",tempExit));
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tempExit = new HashMap<String, Integer>();
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tempExit.put("W", 1);
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locations.put(3, new Location(3, "You are inside a building, a well house for a small spring",tempExit));
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tempExit = new HashMap<String, Integer>();
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tempExit.put("N", 1);
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tempExit.put("W", 2);
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locations.put(4, new Location(4, "You are in a valley beside a stream",tempExit));
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tempExit = new HashMap<String, Integer>();
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tempExit.put("S", 1);
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tempExit.put("W", 2);
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locations.put(5, new Location(5, "You are in the forest",tempExit));
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Map<String, String> vocabulary = new HashMap<String, String>();
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vocabulary.put("QUIT", "Q");
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vocabulary.put("NORTH", "N");
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vocabulary.put("SOUTH", "S");
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vocabulary.put("WEST", "W");
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vocabulary.put("EAST", "E");
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int loc = 1;
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while(true) {
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System.out.println(locations.get(loc).getDescription());
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tempExit.remove("S");
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if(loc == 0) {
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break;
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}
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Map<String, Integer> exits = locations.get(loc).getExits();
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System.out.print("Available exits are ");
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for(String exit: exits.keySet()) {
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System.out.print(exit + ", ");
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}
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System.out.println();
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String direction = scanner.nextLine().toUpperCase();
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if(direction.length() > 1) {
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String[] words = direction.split(" ");
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for(String word: words) {
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if(vocabulary.containsKey(word)) {
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direction = vocabulary.get(word);
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break;
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}
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}
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}
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if(exits.containsKey(direction)) {
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loc = exits.get(direction);
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} else {
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System.out.println("You cannot go in that direction");
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}
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}
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}
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}

‎CODE/075_Sets-&-Hashsets/.idea/misc.xml‎

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‎CODE/075_Sets-&-Hashsets/.idea/modules.xml‎

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