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Articles by George John
Page 32 of 79
Collectors maxBy() method in Java 8
The maxBy() method of the Collectors class in Java 8 returns a Collector that produces the maximal element according to a given Comparator, described as an Optional.The syntax is as followsstatic Collector maxBy(Comparator
Read MoreIntStream generate() method in Java
The generate() method in the IntStream class returns an infinite sequential unordered stream where each element is generated by the provided IntSupplier.The syntax is as followsstatic IntStream generate(IntSupplier i)Here, i is the IntSupplier for generated elements. The IntSupplier represents a supplier of int-valued results.The following is an example to implement IntStream generate() method in Java. We have used the limit() method here as well to limit the number of elements we want from the streamExampleimport java.util.*; import java.util.stream.IntStream; public class Demo { public static void main(String[] args) { IntStream intStream = IntStream.generate(() -> ...
Read MoreIntStream min() method in Java
The IntStream min() method in the Java IntStream class is used to get the minimum element from the stream. It returns an OptionalInt describing the minimum element of this stream, or an empty optional if this stream is empty.The syntax is as followsOptionalInt min()Here, OptionalInt is a container object which may or may not contain an int value.Create an IntStream and add some elementsIntStream intStream = IntStream.of(89, 45, 67, 12, 78, 99, 100);Now, get the minimum element of the streamOptionalInt res = intStream.min();The following is an example to implement IntStream min() method in Java. The isPresent() method of the OptionalInt ...
Read MoreNavigableSet Class ceiling() method in Java
The ceiling() method returns the least element greater than or equal to the given element i.e. 30 hereceiling(30)The following is an example to implement the ceiling method in JavaExampleimport java.util.NavigableSet; import java.util.TreeSet; public class Demo { public static void main(String[] args) { NavigableSet set = new TreeSet(); set.add(10); set.add(25); set.add(40); set.add(55); set.add(70); set.add(85); set.add(100); System.out.println("Returned Value = " + set.ceiling(30)); } }OutputReturned Value = 40
Read MoreIntStream average() method in Java
The average() method of the IntStream class in Java returns an OptionalDouble describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty. It gets the average of the elements of the stream.The syntax is as followsOptionalDouble average()Here, OptionalDouble is a container object which may or may not contain a double value.Create an IntStream with some elementsIntStream intStream = IntStream.of(15, 13, 45, 18, 89, 70, 76, 56);Now, get the average of the elements of the streamOptionalDouble res = intStream.average();The following is an example to implement IntStream average() method in Java. The isPresent() method ...
Read MoreReplace an element in an ArrayList using the ListIterator in Java
An element in ArrayList can be replaced using the ListIterator method set(). This method has a single parameter i.e. the element that is to be replaced and the set() method replaces it with the last element returned by the next() or previous() methods.A program that demonstrates this is given as follows.Exampleimport java.util.ArrayList; import java.util.ListIterator; public class Demo { public static void main(String[] args) { ArrayList aList = new ArrayList(); aList.add("Amanda"); aList.add("Taylor"); aList.add("Justin"); aList.add("Emma"); aList.add("Peter"); System.out.println("The ArrayList elements are: ...
Read MoreSorting in C++
In this section we will see how to perform sorting algorithm in C++. A sorted array is an array in which each of the elements are sorted in some order such as numerical, alphabetical etc. There are many algorithms to sort a numerical array such as bubble sort, insertion sort, selection sort, merge sort, quick sort, heap sort etc. More details about sorting the array using selection sort are given below.The selection sort is a sorting method that yields a sorted array. It does so by repeatedly finding the smallest element in the array and interchanging it with the element ...
Read MoreCollectors minBy() method in Java 8
The minBy() method of the Collectors class in Java 8 returns a Collector that produces the minimum element according to a given Comparator, described as an OptionalThe syntax is as followsstatic Collector
Read MoreLongStream limit() method in Java
The limit() method of the LongStream class in Java returns a stream consisting of the elements of this stream, truncated to be no longer than max in length. Here, max is the parameter of the method.The syntax is as follows.LongStream limit(long max)Here, max is the number of elements the stream should be limited to.To use the LongStream class in Java, import the following package.import java.util.stream.LongStream;Create a LongStream and add elements.LongStream longStream = LongStream.of(2000L, 35000L, 45000L, 50500L, 65000L, 72000L);Now, let’s say you only want to return 4 elements. For that, use the limit as 4.longStream.limit(4).The following is an example to implement ...
Read MorePython Text Wrapping and Filling
In python the textwrap module is used to format and wrap plain texts. There are some options to format the texts by adjusting the line breaks in the input paragraph. To use these modules, we need to import the textwrap module in our code. import textwrap The Textwrapper instance attributes of the constructors are as follows − Sr.No. Attribute & Description 1 width The maximum length of lines. Default value is 70 2 expand_tabs If the value of this attribute is true, then all tabs will be replaced by spaces. Default value ...
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