LexicographicIterator [1034542]

< > BotCompany Repo | #1034542 // LexicographicIterator

JavaX fragment (include) [tags: use-pretranspiled]

srecord noeq LexicographicIterator(S alphabet) extends ItIt<S> {
  new IntBuffer l;
  
  *(S *alphabet, int minLength) {
    repeat minLength { l.add(0); }
  }
  
  public bool hasNext() {
    ret true; // haha!
  }
  
  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)) l.add(0);
    ret s;
  }
  
  S makeString() {
    int n = l(l);
    char[] chars = new[n];
    for i to n:
      chars[i] = alphabet.charAt(l.get(i));
    ret str(chars);
  }
}

Author comment

Began life as a copy of #1004581

Travelled to 4 computer(s): bhatertpkbcr, ekrmjmnbrukm, mowyntqkapby, mqqgnosmbjvj

Snippet ID:

#1034542

Snippet name:

LexicographicIterator

Eternal ID of this version:

#1034542/2

Text MD5:

dc4b9e3bc65ff8de05f7bf5ac532fdcf

Transpilation MD5:

cf6896d60e8da81a8ca145cb7a9606e4

Author:

stefan

Category:

javax / a.i.

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2022-02-11 21:53:20

Source code size:

658 bytes / 34 lines

Pitched / IR pitched:

No / No

Views / Downloads:

565 / 698

Version history:

1 change(s)

Referenced in:

[show references]

1	srecord noeq LexicographicIterator(S alphabet) extends ItIt<S> {
2	new IntBuffer l;
3
4	(S alphabet, int minLength) {
5	repeat minLength { l.add(0); }
6	}
7
8	public bool hasNext() {
9	ret true; // haha!
10	}
11
12	public S next() {
13	S s = makeString();
14	int i = 0;
15	while (i < l(l)) {
16	int n = l.get(i);
17	if (n+1 < l(alphabet)) {
18	l.set(i, n+1);
19	break;
20	}
21	l.set(i++, 0);
22	}
23	if (i >= l(l)) l.add(0);
24	ret s;
25	}
26
27	S makeString() {
28	int n = l(l);
29	char[] chars = new[n];
30	for i to n:
31	chars[i] = alphabet.charAt(l.get(i));
32	ret str(chars);
33	}
34	}