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< > BotCompany Repo | #1009424 // allWordsOfAlphabet_fixedLength

JavaX fragment (include)

static IterableIterator<S> allWordsOfAlphabet_fixedLength(fS alphabet, final int length) {
  ret new IterableIterator<S>() {
    L<Int> l = rep((Int) 0, length);
    
    public bool hasNext() {
      ret true; // should change
    }
    
    public S next() {
      S s = makeString();
      int i = 0;
      while (i < l(l)) {
        int n = l.get(i);
        if (n+1 < l(alphabet)) {
          l.set(i, n+1);
          break;
        }
        l.set(i++, 0);
      }
      if (i >= l(l)) null;
      ret s;
    }
    
    S makeString() {
      StringBuilder buf = new StringBuilder(l(l));
      for (int i = 0; i < l(l); i++)
        buf.append(alphabet.charAt(l.get(i)));
      ret str(buf);
    }
  };
}

Author comment

Began life as a copy of #1004581

download  show line numbers  debug dex  old transpilations   

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Snippet ID: #1009424
Snippet name: allWordsOfAlphabet_fixedLength
Eternal ID of this version: #1009424/3
Text MD5: 0dbdbbae6cbcd10409e8f400f32c2188
Author: stefan
Category: javax / a.i.
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2017-09-06 19:59:32
Source code size: 740 bytes / 31 lines
Pitched / IR pitched: No / No
Views / Downloads: 440 / 491
Version history: 2 change(s)
Referenced in: #1006654 - Standard functions list 2 (LIVE, continuation of #761)
#1017451 - allCombinations