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Articles by Samual Sam
Page 21 of 151
Java Program to copy an array from the specified source array
Use arraycopy() method in Java to copy an array from the specified source array.Here, we have two arrays −int arr1[] = { 10, 20, 30, 40}; int arr2[] = { 3, 7, 20, 30};Now, we will use the arraycopy() method to copy the first two elements of the 1st array to the 2nd array −System.arraycopy(arr1, 0, arr2, 2, 2);The following is an example −Exampleimport java.lang.*; public class Demo { public static void main(String[] args) { int arr1[] = { 10, 20, 30, 40}; int arr2[] = { 3, 7, 20, 30}; System.arraycopy(arr1, 0, arr2, 2, 2); System.out.print("New Array = "); System.out.print(arr2[0] + " "); System.out.print(arr2[1] + " "); System.out.print(arr2[2] + " "); System.out.print(arr2[3] + " "); } }OutputNew Array = 3 7 10 20
Read MoreConvert Short into String in Java
Using toString() method to convert Short to string. Firstly, let us take a short primitive datatype and initialize a short value.short myShort = 55;Now let us include this value to the following Short object.Short s = new Short(myShort);Convert the above given Short to string using the toString() method as shown in the complete example below.Examplepublic class Demo { public static void main(String []args) { short myShort = 55; Short s = new Short(myShort); System.out.println("Short: "+s); String myStr = s.toString(); System.out.println("String: "+myStr); } }OutputShort: 55 String: 55
Read MoreGet the last element from a Sorted Set in Java
To create a Sorted Set, firstly create a Set −Set s = new HashSet();Add elements to the above set −int a[] = {77, 23, 4, 66, 99, 112, 45, 56, 39, 89}; Set s = new HashSet(); try { for(int i = 0; i < 5; i++) { s.add(a[i]); }After that, use TreeSet class to sort −TreeSet sorted = new TreeSet(s);Get the last element, using the last() method −System.out.println("Last element of the sorted set = "+ (Integer)sorted.last());The following is the code to get the last element from a Sorted Set in Java −Exampleimport java.util.*; public class Demo { ...
Read MoreC# Program to remove a node at the beginning of a Linked List
To remove a node at the beginning of a LinkedList, use the RemoveFirst() method.string [] employees = {"Peter", "Robert", "John", "Jacob"}; LinkedList list = new LinkedList(employees);Now, to remove the first element, use the RemoveFirst() method.list.RemoveFirst();Let us see the complete example.Exampleusing System; using System.Collections.Generic; class Demo { static void Main() { string [] employees = {"Peter", "Robert", "John", "Jacob"}; LinkedList list = new LinkedList(employees); foreach (var emp in list) { Console.WriteLine(emp); } // removing first node list.RemoveFirst(); ...
Read MoreHow to create user defined exceptions in C#?
Like any other programming language, in C#, you can easily create user-defined exception. User-defined exception classes are derived from the Exception class.In the below example, the exception created is not a built-in exception.TempIsZeroExceptionYou can try to run the following code to learn how to create user defined exception in C#.Exampleusing System; namespace Demo { class TestTemperature { static void Main(string[] args) { Temperature temp = new Temperature(); try { temp.showTemp(); } catch(TempIsZeroException e) { ...
Read MoreC++ Program to Check Whether Number is Even or Odd
A number is even if it is divisible by two and odd if it is not divisible by two.Some of the even numbers are −2, 4, 6, 8, 10, 12, 14, 16Some of the odd numbers are −1, 3, 5, 7, 9, 11, 13, 15, 17Check Whether Number is Even or Odd using ModulusA program to check whether number is even or odd using modulus is as follows.Example#include using namespace std; int main() { int num = 25; if(num % 2 == 0) cout
Read MoreConst member functions in C++
The const member functions are the functions which are declared as constant in the program. The object called by these functions cannot be modified. It is recommended to use const keyword so that accidental changes to object are avoided.A const member function can be called by any type of object. Non-const functions can be called by non-const objects only.Here is the syntax of const member function in C++ language, datatype function_name const();Here is an example of const member function in C++, Example#include using namespace std; class Demo { int val; public: Demo(int x = 0) { ...
Read MoreDifference between %d and %i format specifier in C
Format Specifier %dThe format specifier %d takes integer value as a signed decimal integer value which means values should be decimal whether it is negative or positive.Here is an example of format specifier %d in C language, Example#include int main() { int v1 = 7456; int v2 = -17346; printf("The value in decimal form : %d", v1); printf("The value in negative : %d", v2); return 0; }OutputThe value in decimal form : 7456 The value in negative : -17346Format Specifier %iThe format specifier %i takes integer value as an integer value which means values ...
Read MoreApply modulus operator to floating-point values in Java
To apply modulus (%) operator to floating-point values in an effortless task. Let us see how.We have the following two values −double one = 9.7; double two = 1.2;Let us now apply the modulus operator −one % twoThe following is the complete example that displays the output as well −Examplepublic class Demo { public static void main(String args[]) { double one = 9.7; double two = 1.2; System.out.println( one % two ); } }Output0.09999999999999964
Read MoreC++ Program to Find Largest Number Among Three Numbers
The largest number among three numbers can be found using if statement multiple times. This is given in a program as follows −Example#include using namespace std; int main() { int a = 5 ,b = 1 ,c = 9; if(a>b) { if(a>c) cout
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