package btp.oneP;

import java.util.AbstractMap;

import java.util.LinkedHashSet;

import java.util.Map;

import java.util.Set;

public class CountingMapData extends AbstractMap<Integer,String>{

public static void main(String...args){

System.out.println(new CountingMapData(60));

}

private int size;

private static String[] chars = "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z".split(" ");

public CountingMapData(int size){

this.size = size<0?0:size;

}

private static class Entry implements Map.Entry<Integer, String>{

int index;

Entry(int index){

this.index = index;

}

public boolean equals(Object o){

return Integer.valueOf(index).equals(o);

}

@Override

public Integer getKey() {

// TODO Auto-generated method stub

return index;

}

@Override

public String getValue() {

// TODO Auto-generated method stub

return chars[index%chars.length]+Integer.toString(index/chars.length);

}

@Override

public String setValue(String value) {

// TODO Auto-generated method stub

return null;

}

public int hashCode(){

return Integer.valueOf(index).hashCode();

}

}

@Override

public Set<java.util.Map.Entry<Integer, String>> entrySet() {

// TODO Auto-generated method stub

Set<Map.Entry<Integer, String>> entries = new LinkedHashSet<Map.Entry<Integer,String>>();

for(int i=0;i<size;i++){

entries.add(new Entry(i));

}

return entries;

}

}