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Programming Articles
Page 792 of 2544
C# Linq ElementAt Method
The ElementAt() method in C# to get elements at specified index position.Firstly, set the string array.string[] str = { "Jack", "Pat", "David"};Now, to get the element at a particular index, use the ElementAt() method as shown in the following example −Exampleusing System.IO; using System; using System.Linq; class Program { static void Main() { string[] str = { "Jack", "Pat", "David"}; Random r = new Random(DateTime.Now.Second); // to generate random string string res = str.AsQueryable().ElementAt(r.Next(0, str.Length)); Console.WriteLine("Random Name = '{0}'", res); } }OutputRandom Name = 'Jack'
Read MoreSortable ("s") Format Specifier in C#
The Sortable standard format specifier represents a custom date and time format string.The format string is defined by the DateTimeFormatInfo.SortableDateTimePattern property.The custom format string.yyyy'-'MM'-'dd'T'HH':'mm':'ssExampleusing System; class Demo { static void Main() { DateTime date = new DateTime(2018, 9, 5, 2, 12, 40); Console.WriteLine(date.ToString("s")); } }Output2018-09-05T02:12:40
Read MoreWrite a power (pow) function using C++
The power function is used to find the power given two numbers that are the base and exponent. The result is the base raised to the power of the exponent.An example that demonstrates this is as follows −Base = 2 Exponent = 5 2^5 = 32 Hence, 2 raised to the power 5 is 32.A program that demonstrates the power function in C++ is given as follows −Example#include using namespace std; int main(){ int x, y, ans = 1; cout > x; cout > y; for(int i=0; i
Read MoreC# Linq First() Method
Use the First() method to get the first element from an array.Firstly, set an array.int[] arr = {20, 40, 60, 80 , 100};Now, use the Queryable First() method to return the first element.arr.AsQueryable().First();The following is the entire example.Exampleusing System; using System.Linq; using System.Collections.Generic; class Program { static void Main() { int[] arr = {20, 40, 60, 80 , 100}; // getting the first element int res = arr.AsQueryable().First(); Console.WriteLine(res); } }Output20
Read MoreHow to print a variable name in C?
The following is an example to print variable name.Example#include #define VariableName(name) #name int main() { int name; char ch; printf("The variable name : %s", VariableName(name)); printf("The variable name : %s", VariableName(ch)); return 0; }OutputThe variable name : name The variable name : chIn the above program, the variable names are printed by defining the method before main()#define VariableName(name) #nameTwo variables of different datatypes are declared. By using the defined function, variable names are printed.int name; char ch; printf("The variable name : %s", VariableName(name)); printf("The variable name : %s", VariableName(ch));
Read MoreCreate and demonstrate an immutable collection in Java
In order to create and demonstrate an immutable collection in Java, we use the unmodifiableCollection() method. This method returns an unmodifiable and immutable view of the collection.Declaration − The java.util.Collections.unmodifiableCollection() method is declared as follows -public static Collection unmodifiableCollection(Collection
Read MoreC# Math.DivRem Method
Use the Math.DivRem method to calculate the quotient of two numbers and return the remainder.Firstly, set dividend and divisor.// dividend long dividend = 30; // divisor long divisor = 7;Now, use the DivRem method.long quotient = Math.DivRem(dividend, divisor, out rem);Exampleusing System; using System.Globalization; class Demo { static void Main() { // remainder long rem; // dividend long dividend = 98; // divisor long divisor = 9; long quotient = Math.DivRem(dividend, divisor, out rem); Console.WriteLine("{0} \ {1} = {2} and remainder = {3}", dividend, divisor, quotient, rem); } }Output98 \ 9 = 10 and remainder = 8
Read MoreCopy characters from string into char Array in Java
Let’s say we have the following string.String str = "Demo Text!";To copy some part of the above string, use the getChars() method.// copy characters from string into chArray =str.getChars( 0, 5, chArray, 0 );The following is an example to copy characters from string into char Array in Java.Examplepublic class Demo { public static void main(String[] args) { String str = "Demo Text!"; char chArray[] = new char[ 5 ]; System.out.println("String: "+str); // copy characters from string into chArray str.getChars( 0, 5, chArray, 0 ); ...
Read MoreRepresent Int32 as a String in C#
Int32 represents a 32-bit signed integer. To represent it as a string, use the ToString() method.Firstly, declare and initialize an Int32 variable.int val = 1023;Now, represent it as a string.val.ToString()Let us see the complete example.Exampleusing System; class Demo { static void Main() { int val = 1023; Console.Write("Integer converted to string = "+val.ToString()); } }OutputInteger converted to string = 1023
Read MoreHow to schedule tasks in Java to run for repeated fixed-rate execution, beginning after the specified delay
One of the methods of the Timer class is void scheduleAtFixedRate(TimerTask task, long delay, long period). This method schedules the specified task for repeated fixed-rate execution, beginning after the specified delay.In fixed-rate execution, each execution is scheduled with respect to the scheduled run time of the initial execution. Fixed-rate execution is apt for repetitive activities that are respond to absolute time. Likewise, fixed-rate execution is appropriate for scheduling multiple repeating timer tasks that must remain in sync.Declaration − The java.util.Time.scheduleAtFixedRate(TimerTask task, long delay, long period) method is declared as follows −public void scheduleAtFixedRate(TimerTask task, long delay, long period)Here, task is ...
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