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Articles by Priya Pallavi
Page 4 of 5
How to perform heapsort on an array in Java?
Following is the algorithm for heapsort (maxheap).Step 1 − Create a new node at the end of the heap.Step 2 − Assign new value to the node.Step 3 − Compare the value of this child node with its parent.Step 4 − If the value of parent is less than a child, then swap them.Step 5 − Repeat step 3 & 4 until Heap property holds.Exampleimport java.util.Arrays; import java.util.Scanner; public class Heapsort { public static void heapSort(int[] myArray, int length) { int temp; int size = length-1; for (int i ...
Read MoreHow to populate an array one value at a time by taking input from user in Java?
To read data from user create a scanner class. Read the size of the array to be created from the user using nextInt() method. Create an array with the specified size. In the loop read the values from the user and store in the array created above.Exampleimport java.util.Arrays; import java.util.Scanner; public class PopulatingAnArray { public static void main(String args[]) { System.out.println("Enter the required size of the array :: "); Scanner s = new Scanner(System.in); int size = s.nextInt(); ...
Read MoreChanging program title in SAP
SET TITLEBAR function should be called from a module that is called from PBO of your screen.The title which you are providing should be active. This can be checked by loading your program in SE80 and check the program information in the tree to the right.
Read MoreHow can we write MySQL stored procedure to select all the data from a table?
To demonstrate it we are creating a procedure named ‘selectdetails()’ which will fetch all the records from table ‘student_detail’.mysql> Delimiter // mysql> Create Procedure selectdetails() -> BEGIN -> Select * from student_detail; -> END// Query OK, 0 rows affected (0.00 sec)Now, after invoking this procedure, we will get all the records from ‘student_detail’ table.mysql> Delimiter ; mysql> CALL selectdetails(); +-----------+-------------+------------+ | Studentid | StudentName | address | +-----------+-------------+------------+ | 100 | Gaurav | Delhi | | 101 | Raman | Shimla | | 103 | Rahul | Jaipur | | 104 | Ram | Chandigarh | | 105 | Mohan | Chandigarh | +-----------+-------------+------------+ 5 rows in set (0.00 sec) Query OK, 0 rows affected (0.01 sec)
Read MoreWhen can I use a forward declaration C/C++?
Forward declaration lets the code following the declaration know that there is are classes with the name Person. This satisfies the compiler when it sees these names used. Later the linker will find the definition of the classes. exampleClass Person; void myFunc(Person p1) { // ... } Class Person { // Class definition here };So in this case when compiler encounters myFunc, it'll know that its going to encounter this class somewhere down in the code. This can be used in cases where code using the class is placed/included before the code containing the class definition.
Read MoreWhat does the volatile keyword mean in C++?
volatile means two things −- The value of the variable may change without any code of yours changing it. Therefore whenever the compiler reads the value of the variable, it may not assume that it is the same as the last time it was read, or that it is the same as the last value stored, but it must be read again.- The act of storing a value to a volatile variable is a "side effect" which can be observed from the outside, so the compiler is not allowed to remove the act of storing a value; for example, if ...
Read MoreWhat would be effect of negative value of second argument, which specifies the number of decimal places, on the output of MySQL ROUND() function?
If we specify the negative value of the second argument then the digits before the decimal point would be deleted and rounded off. The number of digits to be deleted depends upon the value of the negative second argument. Following examples will demonstrate the change, depending upon the negative value of the second argument, in the output of ROUND() function.mysql> Select ROUND(1789.456, -1); +--------------------+ | ROUND(1789.456, -1) | +--------------------+ | 1790 | +--------------------+ 1 row in set (0.00 sec) The query above returns 1790 because the first digit (which is to be deleted ...
Read MoreJava constructor return a value but, what?
No. Java constructor cannot return a value. If required, just create a method which calls the required constructor and returns the required value. See the example below.public class Tester { public Tester(){} public static Tester getInstance(){ Tester tester = new Tester(); return tester; } }
Read MoreHow to get the first day of the current month in MySQL?
With the help of following MySQL query, we can get the first day of the current month −mysql> SELECT DATE_SUB(LAST_DAY(NOW()),INTERVAL DAY(LAST_DAY(NOW()))- 1 DAY) AS 'FIRST DAY OF CURRENT MONTH'; +----------------------------+ | FIRST DAY OF CURRENT MONTH | +----------------------------+ | 2017-10-01 | +----------------------------+ 1 row in set (0.00 sec)
Read MoreHow to sort an ArrayList in Java in ascending order?
You can sort an ArrayList using the sort() method of the Collections class this method accepts a list object as a parameter and sorts the contents of it in ascending order.Example:import java.util.ArrayList; import java.util.Collections; import java.util.LinkedHashSet; import java.util.Set; public class ArrayListSample { public static void main(String[] args) { ArrayList list = new ArrayList(); list.add("JavaFx"); list.add("Java"); list.add("WebGL"); list.add("OpenCV"); Set set = new LinkedHashSet(list); Collections.sort(list); System.out.println(list); } }Output:[Java, JavaFx, OpenCV, WebGL]
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