Question

I need to increment a String in java from ‘aaaaaaaa’ to ‘aaaaaab’ to ‘aaaaaac’ up through the alphabet, then eventually to ‘aaaaaaba’ to ‘aaaaaabb’ etc. etc.

Is there a trick for this?

Answer 1

It’s not much of a ‘trick’, but this works for 4-char strings. Obviously it gets uglier for longer strings, but the idea is the same.

char array[] = new char[4]; for (char c0 = 'a'; c0 <= 'z'; c0++) {   array[0] = c0;   for (char c1 = 'a'; c1 <= 'z'; c1++) {     array[1] = c1;     for (char c2 = 'a'; c2 <= 'z'; c2++) {       array[2] = c2;       for (char c3 = 'a'; c3 <= 'z'; c3++) {         array[3] = c3;         String s = new String(array);         System.out.println(s);       }     }   } }