java.util.stream.IntStream.limit()方法的使用及代码示例

x33g5p2x  于2022-01-20 转载在 其他  
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本文整理了Java中java.util.stream.IntStream.limit()方法的一些代码示例，展示了IntStream.limit()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。IntStream.limit()方法的具体详情如下：
包路径：java.util.stream.IntStream
类名称：IntStream
方法名：limit

IntStream.limit介绍

[英]Returns a stream consisting of the elements of this stream, truncated to be no longer than maxSize in length.

This is a short-circuiting stateful intermediate operation.
[中]返回由此流的元素组成的流，该流被截断为长度不超过maxSize。
这是一个short-circuiting stateful intermediate operation。

代码示例

代码示例来源：origin: speedment/speedment

public IntLimitAction(long maxSize) {
  super(s -> s.limit(maxSize), IntStream.class, LIMIT);
  this.limit = maxSize;
}

代码示例来源：origin: shekhargulati/99-problems

public static <T> List<T> reverse_IntStream(List<T> list) {
  if (list == null) {
    throw new IllegalArgumentException("list can't be null");
  }
  int size = list.size();
  return IntStream.iterate(size - 1, el -> el - 1).limit(size).mapToObj(list::get).collect(toList());
}

代码示例来源：origin: biezhi/30-seconds-of-java8

/**
 * Chunks an array into smaller arrays of a specified size.
 *
 * @param numbers Input array of numbers
 * @param size    The chunk size
 * @return Smaller chunks
 */
public static int[][] chunk(int[] numbers, int size) {
  return IntStream.iterate(0, i -> i + size)
      .limit((long) Math.ceil((double) numbers.length / size))
      .mapToObj(cur -> Arrays.copyOfRange(numbers, cur, cur + size > numbers.length ? numbers.length : cur + size))
      .toArray(int[][]::new);
}

代码示例来源：origin: speedment/speedment

static IntStream repeat(int item, int times) {
  return IntStream.generate(() -> item).limit(times);
}

代码示例来源：origin: biezhi/30-seconds-of-java8

public static int[] initializeArrayWithValues(int n, int value) {
  return IntStream.generate(() -> value).limit(n).toArray();
}

代码示例来源：origin: shekhargulati/strman-java

public static String[] chop(String input, int step) {
  if (input == null || input.length() == 0) {
    return EMPTY_ARRAY;
  }
  if (step == 0) {
    return new String[]{input};
  }
  int strLength = input.length();
  int iterations = strLength % step == 0 ? strLength / step : strLength / step + 1;
  return IntStream.iterate(0, i -> i + step)
      .limit(iterations)
      .mapToObj(i -> input.substring(i, (i + step) < strLength ? i + step : strLength))
      .toArray(String[]::new);
}

代码示例来源：origin: biezhi/30-seconds-of-java8

/**
 * Find last index of element in the array. Return -1 in case element does not exist.
 * <p>
 * Uses IntStream.iterate().limit().filter() to find index of the element in the array.
 *
 * @param elements input array
 * @param el       element to find
 * @return index of the element
 */
public static int lastIndexOf(int[] elements, int el) {
  return IntStream.iterate(elements.length - 1, i -> i - 1)
      .limit(elements.length)
      .filter(idx -> elements[idx] == el)
      .findFirst()
      .orElse(-1);
}

代码示例来源：origin: speedment/speedment

@Override
public IntStream limit(long maxSize) {
  return wrap(stream().limit(maxSize));
}

代码示例来源：origin: ivan-vasilev/neuralnetworks

public Tensor(int startOffset, float[] elements, int[] globalDimensions, int[][] globalDimensionsLimit)
{
  super();
  if (globalDimensions == null || globalDimensions.length == 0)
  {
    throw new IllegalArgumentException("Please provide dimensions");
  }
  this.startOffset = startOffset;
  this.elements = elements;
  this.globalDimensions = globalDimensions;
  this.globalDimensionsLimit = globalDimensionsLimit;
  this.dimTmp = new int[globalDimensions.length];
  this.dimensions = new int[(int) IntStream.range(0, globalDimensions.length)
      .filter(i -> globalDimensionsLimit[0][i] != globalDimensionsLimit[1][i] || globalDimensionsLimit[1][i] - globalDimensionsLimit[0][i] + 1 == globalDimensions[i]).count()];
  for (int i = 0, j = 0; i < globalDimensions.length; i++)
  {
    if (globalDimensionsLimit[0][i] != globalDimensionsLimit[1][i] || globalDimensionsLimit[1][i] - globalDimensionsLimit[0][i] + 1 == globalDimensions[i])
    {
      dimensions[j++] = globalDimensionsLimit[1][i] - globalDimensionsLimit[0][i] + 1;
    }
  }
  this.dimMultiplicators = new int[dimensions.length];
  IntStream.range(0, dimMultiplicators.length).forEach(i -> {
    dimMultiplicators[i] = 1;
    Arrays.stream(globalDimensions).skip(i + 1).limit(globalDimensions.length).forEach(j -> dimMultiplicators[i] *= j);
  });
  size = IntStream.range(0, dimensions.length).map(i -> dimensions[i]).reduce(1, (a, b) -> a * b);
}

代码示例来源：origin: goldmansachs/gs-collections

int[] randomSeeds = new Random(0x123456789ABCDL).ints().limit((long) this.mapSizeDividedBy64).toArray();
this.randomIntsForValues = new Random(0x123456789ABCDL).ints().limit((long) (this.mapSizeDividedBy64 * 64)).toArray();

代码示例来源：origin: speedment/speedment

@Override
  @SuppressWarnings("unchecked")
  public TS build(boolean parallel) {
    final TS built = previous().build(parallel);
    if (built instanceof Stream<?>) {
      return (TS) ((Stream<T>) built).limit(limit);
    } else if (built instanceof IntStream) {
      return (TS) ((IntStream) built).limit(limit);
    } else if (built instanceof LongStream) {
      return (TS) ((LongStream) built).limit(limit);
    } else if (built instanceof DoubleStream) {
      return (TS) ((DoubleStream) built).limit(limit);
    } else {
      throw new UnsupportedOperationException(
        "Built stream did not match any known stream interface."
      );
    }
  }
}

代码示例来源：origin: goldmansachs/gs-collections

this.randomIntegersForMap = new Random(0x123456789ABCDL).ints().limit((long) (this.mapSizeDividedBy16000 * 64)).toArray();

代码示例来源：origin: prestodb/presto

case ".*x.*":
  pattern = Slices.utf8Slice(".*x.*");
  IntStream.generate(() -> 97).limit(sourceLength).forEach(sliceOutput::appendByte);
  break;
case ".*(x|y).*":
  pattern = Slices.utf8Slice(".*(x|y).*");
  IntStream.generate(() -> 97).limit(sourceLength).forEach(sliceOutput::appendByte);
  break;
case "longdotstar":
  pattern = Slices.utf8Slice(".*coolfunctionname.*");
  ThreadLocalRandom.current().ints(97, 123).limit(sourceLength).forEach(sliceOutput::appendByte);
  break;
case "phone":
  pattern = Slices.utf8Slice("\\d{3}/\\d{3}/\\d{4}");
  ThreadLocalRandom.current().ints(47, 58).limit(sourceLength).forEach(sliceOutput::appendByte);
  break;
case "literal":
  pattern = Slices.utf8Slice("literal");
  ThreadLocalRandom.current().ints(97, 123).limit(sourceLength).forEach(sliceOutput::appendByte);
  break;
default:

代码示例来源：origin: prestodb/presto

.ints(0, 1000)
.distinct()
.limit(numberOfUsers)
.toArray();

代码示例来源：origin: ehcache/ehcache3

@Test
public void testLoadExistingRecoversInflightInvalidationsForEventualCache() throws Exception {
 ClusterTierActiveEntity activeEntity = new ClusterTierActiveEntity(defaultRegistry, defaultConfiguration, DEFAULT_MAPPER);
 EhcacheStateServiceImpl ehcacheStateService = defaultRegistry.getStoreManagerService();
 ehcacheStateService.createStore(defaultStoreName, defaultStoreConfiguration, false);  //Passive would have done this before failover
 InvalidationTracker invalidationTracker = ehcacheStateService.getInvalidationTracker(defaultStoreName);
 Random random = new Random();
 random.ints(0, 100).limit(10).forEach(invalidationTracker::trackHashInvalidation);
 activeEntity.loadExisting();
 assertThat(activeEntity.getInflightInvalidations().isEmpty(), is(false));
}

代码示例来源：origin: apache/ignite

/**
 * Test with large user attributes on random nodes.
 * Also tests that big messages (more than 1MB) properly separated and processed by zk.
 *
 * @throws Exception If failed.
 */
@Test
public void testLargeUserAttribute3() throws Exception {
  Set<Integer> idxs = ThreadLocalRandom.current()
    .ints(0, 10)
    .distinct()
    .limit(3)
    .boxed()
    .collect(Collectors.toSet());
  for (int i = 0; i < 10; i++) {
    info("Iteration: " + i);
    if (idxs.contains(i))
      initLargeAttribute();
    else
      userAttrs = null;
    helper.clientMode(i > 5);
    startGrid(i);
  }
  waitForTopology(10);
}

代码示例来源：origin: prestodb/presto

@Test
  public void testMassive()
  {
    BlockBuilder inputBlockBuilder = BIGINT.createBlockBuilder(null, 5000);

    TypedHistogram typedHistogram = new SingleTypedHistogram(BIGINT, 1000);
    IntStream.range(1, 2000)
        .flatMap(i -> IntStream.iterate(i, IntUnaryOperator.identity()).limit(i))
        .forEach(j -> BIGINT.writeLong(inputBlockBuilder, j));

    Block inputBlock = inputBlockBuilder.build();
    for (int i = 0; i < inputBlock.getPositionCount(); i++) {
      typedHistogram.add(i, inputBlock, 1);
    }

    MapType mapType = mapType(BIGINT, BIGINT);
    BlockBuilder out = mapType.createBlockBuilder(null, 1);
    typedHistogram.serialize(out);
    Block outputBlock = mapType.getObject(out, 0);
    for (int i = 0; i < outputBlock.getPositionCount(); i += 2) {
      assertEquals(BIGINT.getLong(outputBlock, i + 1), BIGINT.getLong(outputBlock, i));
    }
  }
}

代码示例来源：origin: opentripplanner/OpenTripPlanner

int[] randomNumbers = random.ints().limit(10007).map(Math::abs).toArray();
int nextRandom = 0;

代码示例来源：origin: opentripplanner/OpenTripPlanner

int[] randomNumbers = random.ints().limit(10007).map(Math::abs).toArray();
int nextRandom = 0;

代码示例来源：origin: aol/cyclops

@Deprecated //moved to cyclops.companion.Functions
public static Function<? super ReactiveSeq<Integer>, ? extends ReactiveSeq<Integer>> limitInts(long maxSize){
  return a->a.ints(i->i,s->s.limit(maxSize));
}
/*

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