LongStream count() devuelve el recuento de elementos en la secuencia. LongStream count() está presente en java.util.stream.LongStream
Sintaxis:
long count()
Ejemplo 1: Cuente los elementos en LongStream.
// Java code for LongStream count()
// to count the number of elements in
// given stream
import java.util.*;
import java.util.stream.LongStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// creating a stream
LongStream stream = LongStream.of(2L, 3L, 4L, 5L,
6L, 7L, 8L);
// storing the count of elements
// in a variable named total
long total = stream.count();
// displaying the total number of elements
System.out.println(total);
}
}
Producción:
7
Ejemplo 2: Contar los elementos en un rango dado.
// Java code for LongStream count()
// to count the number of elements in
// given range excluding the last element
import java.util.*;
import java.util.stream.LongStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// creating a stream
LongStream stream = LongStream.range(2, 50);
// storing the count of elements
// in a variable named total
long total = stream.count();
// displaying the total number of elements
System.out.println(total);
}
}
Producción:
48
Ejemplo 3: Cuente elementos distintos en LongStream.
// Java code for LongStream count()
// to count the number of distinct
// elements in given stream
import java.util.*;
import java.util.stream.LongStream;
class GFG {
// Driver code
public static void main(String[] args)
{
// creating a stream
LongStream stream = LongStream.of(2L, 3L, 4L, 4L,
7L, 7L, 8L);
// storing the count of distinct elements
// in a variable named total
long total = stream.distinct().count();
// displaying the total number of elements
System.out.println(total);
}
}
Producción:
5
Publicación traducida automáticamente
Artículo escrito por Sahil_Bansall y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA