Created
July 23, 2014 00:21
-
-
Save tbodt/f9e19cee3a64f2752eed to your computer and use it in GitHub Desktop.
Print all anagrams
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| public class Anagrams { | |
| public static void main(String[] args) { | |
| String start = args[0]; | |
| String anagram = start; | |
| do { | |
| System.out.println(anagram); | |
| anagram = nextAnagram(anangram); | |
| } while (!start.equals(anagram)) | |
| } | |
| public static String nextAnagram(String word) { | |
| StringBuilder sb = new StringBuilder(word); | |
| for (int i = sb.length() - 1; i > 0; i--) { | |
| if (sb.charAt(i - 1) < sb.charAt(i)) { | |
| int j = sb.length() - 1; | |
| while (sb.charAt(i - 1) > sb.charAt(j)) | |
| j--; | |
| swap(sb, i - 1, j); | |
| reverse(sb, i, sb.length() - 1); | |
| return sb.toString(); | |
| } | |
| } | |
| reverse(sb, 0, sb.length() - 1); | |
| return sb.toString(); | |
| } | |
| private static void swap(StringBuilder sb, int i, int j) { | |
| char temp = sb.charAt(i); | |
| sb.setCharAt(i, sb.getCharAt(j)); | |
| sb.setCharAt(j, temp); | |
| } | |
| private static void reverse(StringBuffer sb, int i, int j) { | |
| while (i < j) { | |
| swap(sb, i, j); | |
| i++; | |
| j--; | |
| } | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment