In this section we will see how to convert a number (integer or float or any other numeric type data) to a string.The logic is very simple. Here we will use the sprintf() function. This function is used to print some value or line into a string, but not in the console. This is the only difference between printf() and sprintf(). Here the first argument is the string buffer. where we want to save our data.Input: User will put some numeric value say 42.26 Output: This program will return the string equivalent result of that number like “42.26”AlgorithmStep 1 − ... Read More

The iterator() method of the AbstractSequentialList class iterates over the elements in this list and returns it.The syntax is as followsIterator iterator()To work with the AbstractSequentialList class in Java, you need to import the following packageimport java.util.AbstractSequentialList;The following is an example to implement AbstractSequentialList iterator() method in JavaExample Live Demoimport java.util.LinkedList; import java.util.AbstractSequentialList; import java.util.Iterator; public class Demo {    public static void main(String[] args) {       AbstractSequentialList       absSequential = new LinkedList();       absSequential.add(10);       absSequential.add(25);       absSequential.add(60);       absSequential.add(70);       absSequential.add(195);       System.out.println("Elements ... Read More

The flatMap() method of the DoubleStream class returns a stream with the results of replacing each element of this stream with the contents of a mapped stream formed by applying the provided mapping function to each element.The syntax is as followsDoubleStream flatMap(DoubleFunction

The findFirst() method returns an OptionalDouble describing the first element of this stream. It returns an empty OptionalDouble if the stream is empty.The syntax is as followsOptionalDouble findFirst()Here, OptionalDouble is a container object which may or may not contain a double value.To use the DoubleStream class in Java, import the following packageimport java.util.stream.DoubleStream;First, create a DoubleStream with some elementsDoubleStream doubleStream = DoubleStream.of(15.6, 30.2, 50.5, 78.9, 80.4, 95.8);Now, get the first element of this stream using the findFirst() methodOptionalDouble res = doubleStream.findFirst();The following is an example to implement DoubleStream findFirst() method in JavaExample Live Demoimport java.util.*; import java.util.stream.DoubleStream; public class Demo { ... Read More

You can create a LabelValue tuple using with() method as well. The parameter of the with() method is the label and value of the LabelValue class.Let us first see what we need to work with JavaTuples. To work with LabelValue class in JavaTuples, you need to import the following packageimport org.javatuples.LabelValue;Note Download JavaTuples Jar library to run JavaTuples program. If you are using Eclipse IDE, then Right Click Project -> Properties -> Java Build Path -> Add External Jars and upload the downloaded JavaTuples jar file. Refer the below guide for all the steps to run JavaTuplesSteps − How to ... Read More

Here we will see how the string library functions can be used to match strings in C++. Here we are using the find() operation to get the occurrences of the substring into the main string. This find() method returns the first location where the string is found. Here we are using this find() function multiple times to get all of the matches.If the item is found, this function returns the position. But if it is not found, it will return string::npos.So for checking whether the substring is present into the main string, we have to check the return value of ... Read More

To create Decade Tuple from another collection in Java, use the fromArray() or the fromCollection() method. Here, we will see how to create a Decade Tuple using the fromCollection() method. This method will allow us to crate a Decade Tuple from a List collection in Java.Let us first see what we need to work with JavaTuples. To work with Decade class in JavaTuples, you need to import the following packageimport org.javatuples.Decade;Note Download JavaTuples Jar library to run JavaTuples program. If you are using Eclipse IDE, then RightClick Project -> Properties -> Java Build Path -> Add External Jars and upload ... Read More

To add elements in CopyOnWriteArrayList class in Java, use the add() method. Here, the element is appended to the end of the list.The syntax is as followsboolean add(E e)Here, the parameter e is the element to be appended to this list.To work with CopyOnWriteArrayList class, you need to import the following packageimport java.util.concurrent.CopyOnWriteArrayList;The following is an example to add elements in the CopyOnWriteArrayList class in JavaExample Live Demoimport java.util.concurrent.CopyOnWriteArrayList; public class Demo {    public static void main(String[] args) {       CopyOnWriteArrayList       arrList = new CopyOnWriteArrayList();       arrList.add(100);       arrList.add(250);     ... Read More

Remove all the elements from the list using the clear() method of the AbstractList class. After using the method, the list won’t be having any elements.The syntax is as followspublic void clear()To work with the AbstractList class, import the following packageimport java.util.AbstractList;The following is an example to implement clear() method of the AbstractlList class in JavaExample Live Demoimport java.util.ArrayList; import java.util.AbstractList; public class Demo {    public static void main(String[] args) {       AbstractList       myList = new ArrayList();       myList.add(75);       myList.add(100);       myList.add(150);       myList.add(200);     ... Read More

In C++ we have strings in standard library. In this program we will see how to check whether two strings are identical or not. In this case we will ignore the case.Here the logic is simple. We will convert the whole string into lowercase or uppercase strings, then compare them, and return the result.We have used the algorithm library to get the transform function to convert the string into lowercase string.Input: Two strings “Hello WORLD” and “heLLO worLD” Output: Strings are sameAlgorithmStep 1: Take two strings str1, and str2 Step 2: Convert str1, and str2 into lowercase form Step 3: ... Read More