RoaringBitmap 内部包含一个 RoaringArray 类型的 highLowContainer 变量,RoaringArray 包含一个 short[] 类型的 keys 变量与Container[] 类型的values变量。 数据x 写入流程: 通过(short) (x >>> 16) 操作得到高16位,也就是 x 对应的key,将其存放在keys中 通过(short) (x & 0xFFFF)操作得到低16位,得到...
packageexample.mystream;importlombok.AllArgsConstructor;importlombok.Getter;importlombok.NoArgsConstructor;importlombok.ToString;importjava.util.Arrays;importjava.util.List;importjava.util.Map;importjava.util.stream.Collectors;publicclassListToMap{@AllArgsConstructor@NoArgsConstructor@ToStringprivatestaticclassVideoInf...
* Return a new RDD containing the distinct elements in this RDD. */defdistinct(numPartitions:Int)(implicit ord:Ordering[T]=null):RDD[T]=withScope{map(x=>(x,null)).reduceByKey((x,y)=>x,numPartitions).map(_._1)}//numPartitions:分区数 3.2 无参: 代码语言:javascript 代码运行次数:0 ...
Method: IntStreamdistinct() Returns a stream consisting of the distinct elements. This is astateful intermediate operation. Examples packagecom.logicbig.example.intstream; importjava.util.stream.IntStream; publicclassDistinctExample{ publicstaticvoidmain(String...args){ IntStreamintStream=IntStream.of(...
We are required to write a JavaScript function that takes in an array of literals, such that some array elements are repeated. We are required to return an array that contains that appear only once (not repeated). For example: If the array is:> const arr = [9, 5, 6, 8, 7, 7, ...
// Scala program to print the // distinct elements of the array object Sample { def main(args: Array[String]) { var arr1 = Array(10, 23, 14, 16, 10, 14, 13, 60); var i: Int = 0; var arr2 = arr1.distinct; i = 0; println("Distinct elements of array: ") while (i <...
' Step through the elements in the array starting with the ' last element in the array. For i = UBound(TempArray) To 0 Step -1' Set MaxVal to the element in the array and save the ' index of this element as MaxIndex. MaxVal = TempArray(i) MaxIndex = i...
The elements in the array are: array[0] = c array[1] = c array[2] = c array[3] = Hi array[4] = Hi array[5] = 3 array[6] = 3 array[7] = 3 Distinct element of an array: [c, Hi, 3] Print Page Previous Next
For example, given array A consisting of six elements such that: A[0] = 2 A[1] = 1 A[2] = 1 A[3] = 2 A[4] = 3 A[5] = 1 the function should return 3, because there are 3 distinct values appearing in array A, namely 1, 2 and 3. ...
Java8使用lambda表达式进行函数式编程可以对集合进行非常方便的操作。一个比较常见的操作是将list转换成map,一般使用Collectors的toMap()方法进行转换。一个比较常见的问题是当list中含有相同元素的时候,如果不指定取哪一个,则会抛出异常。因此,这个指定是必须的。