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The free() function is used to deallocate memory while it is allocated using malloc(), calloc() and realloc(). The syntax of the free is simple. We simply use free with the pointer. Then it can clean up the memory.free(ptr);The free() is not taking any size as parameter, but only pointer. So the question comes, that how the free() function know about the size of the block to deallocate?When we use the dynamic memory allocation techniques for memory allocations, then this is done in the actual heap section. It creates one word larger than the requested size. This extra word is used ... Read More
In this program we will see how to multiply using logical operators.Problem StatementWrite 8085 Assembly language program to multiply two 8-bit numbers using logical operators.DiscussionWe are assuming the first number is in register B, and second number is in register C, and the result must not have any carry.Here we are multiplying with 04H. We can perform the multiplication by left rotate two times. Assign 06H into B, and 04H into C. Load B to A, then rotate the accumulator two times. Store the result into a specified memory.InputRegisterDataB06C04Flow Diagram ProgramAddressHEX CodesLabelsMnemonicsCommentsF00006, 06 MVI B, 06H F0020E, 04 MVI C, 04H F00478 MOV A, BLoad B ... Read More
The getValueX() method is used to get a value from Quartet Tuple class in Java at a particular index. For example, getValue0().Let us first see what we need to work with JavaTuples. To work with Quartet class in JavaTuples, you need to import the following package −import org.javatuples.Quartet;Note − Steps to download and run JavaTuples program. If you are using Eclipse IDE to run Quartet Class in JavaTuples, then Right Click Project → Properties → Java Build Path → Add External Jars and upload the downloaded JavaTuples jar file.The following is an example −Exampleimport org.javatuples.Quartet; public class Demo { ... Read More
This action lets you insert files into the page being generated. The syntax looks like this −Unlike the include directive, which inserts the file at the time the JSP page is translated into a servlet, this action inserts the file at the time the page is requested.Following table lists out the attributes associated with the include action −S.No.Attribute & Description1pageThe relative URL of the page to be included.2flushThe boolean attribute determines whether the included resource has its buffer flushed before it is included.ExampleLet us define the following two files (a)date.jsp and (b) main.jsp as follows −Following is the content of ... Read More
The day of the month for a particular LocalDateTime can be obtained using the getDayOfMonth() method in the LocalDateTime class in Java. This method requires no parameters and it returns the day of the month which can be in the range of 1 to 31.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; public class Demo { public static void main(String[] args) { LocalDateTime ldt = LocalDateTime.parse("2019-02-18T11:30:15"); System.out.println("The LocalDateTime is: " + ldt); System.out.println("The day of ... Read More
The boxed() method of the LongStream class returns a Stream consisting of the elements of this stream, each boxed to a Long.The syntax is as follows.Stream boxed()Here, Stream represents a sequence of elements. To use the LongStream class in Java, import the following package.import java.util.stream.LongStream;Create an IntStream and add some elements in a range using the range() method.LongStream intStream = LongStream.range(20800L, 20805L);Now, use the boxed() methodStream s = intStream.boxed();The following is an example to implement LongStream boxed() method in Java.Example Live Demoimport java.util.stream.Stream; import java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream intStream ... Read More
You can use update() function to insert records in MongoDB if it does not exist. To understand the concept, let us create a collection with the document. The query to create a collection with a document is as follows −> db.insertIfNotExistsDemo.insertOne({"StudentName":"Mike", "StudentAge":21}); { "acknowledged" : true, "insertedId" : ObjectId("5c7eec7b559dd2396bcfbfc2") } > db.insertIfNotExistsDemo.insertOne({"StudentName":"Sam", "StudentAge":22}); { "acknowledged" : true, "insertedId" : ObjectId("5c7eec97559dd2396bcfbfc3") }Display all documents from a collection with the help of find() method. The query is as follows −> db.insertIfNotExistsDemo.find().pretty(); The following is the output: { "_id" : ObjectId("5c7eec7b559dd2396bcfbfc2"), "StudentName" : "Mike", "StudentAge" : ... Read More
To achieve this, the following is the syntaxselect date_format(from_unixtime(yourColumnName), '%b %d, %Y %l:%i %p PDT') from yourTableName;To understand the above syntax, let us create a table. The query to create a table is as followsmysql> create table unixTimeStampFormatDemo -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> MyTimeStampValue bigint -> ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into unixTimeStampFormatDemo(MyTimeStampValue) values(1334428200); Query OK, 1 row affected (0.20 sec) mysql> insert into unixTimeStampFormatDemo(MyTimeStampValue) values(1513881000); Query OK, 1 row affected (0.15 ... Read More
Here is a C++ Program to implement First Fit Decreasing for 1-D objects and M binsRequired functions and pseudocode:Begin function binPack() returns number of bins required. Initialize binC = 0 Initialize an array to store binVal. Place items one by one. function sort() to perform bubble sort in the descending order. EndExample Code#include using namespace std; void binPack(int *a, int s, int n) { int binC = 0; int binVal[n]; for (int i = 0; i < n; i++) binVal[i] = s; for (int i = 0; i < ... Read More
This example demonstrate about How to create our own Listener interface in androidStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken text view to show listener data.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.view.View; import android.widget.TextView; public class MainActivity extends FragmentActivity implements sampleInterFace { sampleInterFace interFace; TextView textView; @Override public void onCreate(Bundle savedInstanceState) ... Read More