// An abbreviation of a word follows the form <first letter><number><last letter>. Below are some examples of word abbreviations:

// a) it --> it (no abbreviation)

// 1

// b) d|o|g --> d1g

// 1 1 1

// 1---5----0----5--8

// c) i|nternationalizatio|n --> i18n

// 1

// 1---5----0

// d) l|ocalizatio|n --> l10n

// Assume you have a dictionary and given a word, find whether its abbreviation is unique in the dictionary. A word's abbreviation is unique if no other word from the dictionary has the same abbreviation.

// Example:

// Given dictionary = [ "deer", "door", "cake", "card" ]

// isUnique("dear") ->

// false

// isUnique("cart") ->

// true

// isUnique("cane") ->

// false

// isUnique("make") ->

// true

import java.util.ArrayList;

public class UniqueWordAbbreviation {

HashMap<String, String> map;

public ValidWordAbbr(String[] dictionary) {

this.map = new HashMap<String, String>();

for(String word : dictionary) {

String key = getKey(word);

if(map.containsKey(key)) {

if(!map.get(key).equals(word)) {

map.put(key, "");

}

} else {

map.put(key, word);

}

}

}

public boolean isUnique(String word) {

return !map.containsKey(getKey(word))||map.get(getKey(word)).equals(word);

}

public String getKey(String word) {

if(word.length() <= 2) {

return word;

}

return word.charAt(0) + Integer.toString(word.length() - 2) + word.charAt(word.length() - 1);

}

}

// Your ValidWordAbbr object will be instantiated and called as such:

// ValidWordAbbr vwa = new ValidWordAbbr(dictionary);

// vwa.isUnique("Word");

// vwa.isUnique("anotherWord");