COMS W1004 Lecture 14: Dictionary
7 May 2018
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importjava.io.BufferedReader;
importjava.io.FileReader;
importjava.io.IOException;
importjava.util.ArrayList;
importjava.util.List;
public class WordLists {
static List<String>dictionaryList = new ArrayList<String>();
static List<String>arrList = new ArrayList<String>();
publicWordLists(String fileName) throws IOException {
String data = null;
BufferedReader input = new BufferedReader(new FileReader(fileName));
while((data=input.readLine()) != null) {
dictionaryList.add(data);
}
}
// This method returns an array of words of length n.
public static List<String>lengthN(int n) {
for(int i =0; i <dictionaryList.size(); i++) {
if(dictionaryList.get(i).length() == n) {
arrList.add(dictionaryList.get(i));
}
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}
System.out.println(arrList);
returnarrList;
}
//This method returns an array of words of length n beginning with the letter firstLetter
public static List<String>startsWith(int n, char firstLetter ) {
for(int i =0; i <dictionaryList.size(); i++) {
if(dictionaryList.get(i).length() == n &&dictionaryList.get(i).charAt(0) ==
firstLetter) {
arrList.add(dictionaryList.get(i));
}
}
System.out.println(arrList);
returnarrList;
}
//This method returns an array of words of length n containing the letter included but not
beginning with it.
public static List<String>containsLetter(int n, char included) {
String str = Character.toString(included);
for(int i =0; i <dictionaryList.size(); i++) {
if(dictionaryList.get(i).length() == n &&dictionaryList.get(i).charAt(0) != included
&&dictionaryList.get(i).contains(str)) {
arrList.add(dictionaryList.get(i));
}
}
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Document Summary
Importjava. io. bufferedreader; importjava. io. filereader; importjava. io. ioexception; importjava. util. arraylist; importjava. util. list; public class wordlists { static listdictionarylist = new arraylist(); static listarrlist = new arraylist(); publicwordlists(string filename) throws ioexception { Bufferedreader input = new bufferedreader(new filereader(filename)); while((data=input. readline()) != null) { dictionarylist. add(data); // this method returns an array of words of length n. public static listlengthn(int n) { for(int i =0; i startswith(int n, char firstletter ) { for(int i =0; i containsletter(int n, char included) { String str = character. tostring(included); for(int i =0; i
