Java - Sequence

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Collection - Sequence (Ordered)

Integer

From a stream of integer (ie a IntStream)

List<Integer> sequence = IntStream.range(0, 10).boxed().collect(Collectors.toList());
System.out.println(sequence);

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Character

5 questions mark

List<String> values = 
      IntStream.of(5)
      .mapToObj(s -> "?")
      .collect(Collectors.toList());