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Transpose a matrix means we’re turning its columns into its rows. Let’s understand it by an example what if looks like after the transpose.Let’s say you have original matrix something like -x = [[1, 2][3, 4][5, 6]]In above matrix “x” we have two columns, containing 1, 3, 5 and 2, 4, 6.So when we transpose above matrix “x”, the columns becomes the rows. So the transposed version of the matrix above would look something like -x1 = [[1, 3, 5][2, 4, 6]]So the we have another matrix ‘x1’, which is organized differently with different values in different places.Below are couple ... Read More
The Program and data which are stored in the memory, are used externally to the microprocessor for executing the complete instruction cycle. Thus to execute a complete instruction of the program, the following steps should be performed by the 8085 microprocessor.Fetching the opcode from the memory;Decoding the opcode to identify the specific set of instructions;Fetching the remaining Bytes left for the instruction, if the instruction length is of 2 Bytes or 3 Bytes;Executing the complete instruction procedure.The given steps altogether constitute the complete instruction cycle. These above mentioned steps are described in detail later. The above instructions are assumed by ... Read More
You can also iterate through Quartet class like Arrays using a loop.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 { public static void main(String[] args) { ... Read More
These are two attributes that are common to all Action elements: the id attribute and the scope attribute.Id attributeThe id attribute uniquely identifies the Action element and allows the action to be referenced inside the JSP page. If the Action creates an instance of an object, the id value can be used to reference it through the implicit object PageContext.Scope attributeThis attribute identifies the lifecycle of the Action element. The id attribute and the scope attribute are directly related, as the scope attribute determines the lifespan of the object associated with the id. The scope attribute has four possible values:(a) ... Read More
The tag is used to format numbers, percentages, and currencies.AttributeThe tag has the following attributes −AttributeDescriptionRequiredDefaultValueNumeric value to displayYesNonetypeNUMBER, CURRENCY, or PERCENTNoNumberpatternSpecify a custom formatting pattern for the output.NoNonecurrencyCodeCurrency code (for type = "currency")NoFrom the default localecurrencySymbolCurrency symbol (for type = "currency")NoFrom the default localegroupingUsedWhether to group numbers (TRUE or FALSE)NotruemaxIntegerDigitsMaximum number of integer digits to printNoNoneminIntegerDigitsMinimum number of integer digits to printNoNonemaxFractionDigitsMaximum number of fractional digits to printNoNoneminFractionDigitsMinimum number of fractional digits to printNoNonevarName of the variable to store the formatted numberNoPrint to pagescopeScope of the variable to store the formatted numberNopageExample ... Read More
The length of the year in a particular LocalDate is obtained using the method lengthOfYear() in the LocalDate class in Java. This method requires no parameters and it returns the length of the year in a particular LocalDate i.e. 365 or 366 for a leap year.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; public class Main { public static void main(String[] args) { LocalDate ld = LocalDate.parse("2019-02-15"); System.out.println("The LocalDate is: " + ld); System.out.println("The length ... Read More
The toArray() method of the LongStream class returns an array containing the elements of this stream.The syntax is as follows.long[] toArray()To use the LongStream class in Java, import the following package.import java.util.stream.LongStream;Create LongStream and add some elements.LongStream longStream = LongStream.of(25000L, 28999L, 6767788L);Create a Long array and use the toArray() method to return the elements of the stream as array elements.long[] myArr = longStream.toArray();The following is an example to implement LongStream toArray() method in Java.Example Live Demoimport java.util.*; import java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream longStream = LongStream.of(25000L, 28999L, 6767788L); ... Read More
To print unpretty json, use the following syntax −var yourVariableName= db.yourCollectionName.find().sort({_id:-1}).limit(10000); while( yourVariableName.hasNext() ) { printjsononeline(yourVariableName.next() ); };To understand the syntax, let us create a collection with the document. The query to create a collection with a document is as follows −> db.unprettyJsonDemo.insertOne({"StudentName":"John", "StudentAge":21, "StudentTechnicalSkills":["C", "C++"]}); { "acknowledged" : true, "insertedId" : ObjectId("5c900df25705caea966c557d") } > db.unprettyJsonDemo.insertOne({"StudentName":"Carol", "StudentAge":22, "StudentTechnicalSkills":["MongoDB", "MySQL"]}); { "acknowledged" : true, "insertedId" : ObjectId("5c900e085705caea966c557e") }all documents from a collection with the help of find() method. The query is as follows −> db.unprettyJsonDemo.find().pretty();The following is the output −{ "_id" : ObjectId("5c900df25705caea966c557d"), ... Read More
Yes, you can do that. First, you need to create an index and then use explain(). Let us first create a MongoDB index. Following is the query:> db.indexOrQueryDemo.ensureIndex({"First":1});This will produce the following output{ "createdCollectionAutomatically" : false, "numIndexesBefore" : 2, "numIndexesAfter" : 3, "ok" : 1 }The query to create second index is as follows> db.indexOrQueryDemo.ensureIndex({"Second":1});This will produce the following output{ "createdCollectionAutomatically" : false, "numIndexesBefore" : 3, "numIndexesAfter" : 4, "ok" : 1 }Following is the query for $or operator with indexes. We have used explain() as well here> db.indexOrQueryDemo.find({$or:[{First:1}, {Second:2}]}).explain();This will produce ... Read More
The memory layout for C programs is like below. There are few levels. These are −Stack SegmentHeap SegmentText SegmentData segmentNow let us see what are the functionalities of these sections.Sr.NoSections & Description1StackThe process Stack contains the temporary data such as method/function parameters, return address and local variables. It is an area of memory allotted for automatic variables and function parameters. It also stores a return address while executing function calls. Stack uses LIFO (Last- In-First-Out) mechanism for storing local or automatic variables, function parameters and storing next address or return address. The return address refers to the address to return ... Read More