src/main/java/org/apache/datasketches/kll/KllFloatsHelper.java [282:293]:
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  private static void randomlyHalveDownFloats(final float[] buf, final int start, final int length,
      final Random random) {
    assert isEven(length);
    final int half_length = length / 2;
    final int offset = random.nextInt(2);       // disable for validation
    //final int offset = deterministicOffset(); // enable for validation
    int j = start + offset;
    for (int i = start; i < (start + half_length); i++) {
      buf[i] = buf[j];
      j += 2;
    }
  }
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src/main/java/org/apache/datasketches/kll/KllDoublesHelper.java [282:293]:
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  private static void randomlyHalveDownDoubles(final double[] buf, final int start, final int length,
      final Random random) {
    assert isEven(length);
    final int half_length = length / 2;
    final int offset = random.nextInt(2);       // disable for validation
    //final int offset = deterministicOffset(); // enable for validation
    int j = start + offset;
    for (int i = start; i < (start + half_length); i++) {
      buf[i] = buf[j];
      j += 2;
    }
  }
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src/main/java/org/apache/datasketches/kll/KllItemsHelper.java [284:295]:
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  private static void randomlyHalveDownItems(final Object[] buf, final int start, final int length,
      final Random random) {
    assert isEven(length);
    final int half_length = length / 2;
    final int offset = random.nextInt(2);       // disable for validation
    //final int offset = deterministicOffset(); // enable for validation
    int j = start + offset;
    for (int i = start; i < (start + half_length); i++) {
      buf[i] = buf[j];
      j += 2;
    }
  }
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src/main/java/org/apache/datasketches/kll/KllLongsHelper.java [282:293]:
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  private static void randomlyHalveDownLongs(final long[] buf, final int start, final int length,
      final Random random) {
    assert isEven(length);
    final int half_length = length / 2;
    final int offset = random.nextInt(2);       // disable for validation
    //final int offset = deterministicOffset(); // enable for validation
    int j = start + offset;
    for (int i = start; i < (start + half_length); i++) {
      buf[i] = buf[j];
      j += 2;
    }
  }
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