Capricorn or Kaprekar Number Program in Java

A number is called Capricorn or Kaprekar number whose square is divided into two parts in any conditions and parts are added, the additions of parts is equal to the number, is called Capricorn or Kaprekar number.

Example: 45

45 =  (45)2 = 2025
2025
 All parts for 2025:-
 202 + 5 = 207 (not 45)
 20 + 25 = 45
 2 + 025 = 27 (not 45)
Above we can see one combination is equal to number so that 45 is Capricorn or Kaprekar number.

Selection Sort in String Program in Java

Write a program to input the names of 15 cities sort in descending order using selection sort technique. import java.util.Scanner; public class SelectionSortString { public static void main(String[] args) { String cities[] = new String[15]; Scanner sc = new Scanner(System.in); int l = cities.length; System.out.println(“Enter 15 cities name:”); for (int i = 0; i < […]

Java Constructors

Java constructor is similar to the method. It calls when an object(instance) of a class is created. Allocated in the memory when a constructor is called. It is used to initialize the object of a class. When an object is created using the new keyword, constructor is called. It calls a default constructor if there […]

Java String Function replace()

The java string replace() method returns a string replacing all the old char or CharSequence to new char or CharSequence. Since JDK 1.5, a new replace() method is introduced, allowing you to replace a sequence of char values. Java String replace(char old, char new) method example public class ReplaceExample1{ public static void main(String args[]){ String […]

Java String Function length()

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Java String Function lastIndexOf()

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Java String Function join()

The java string join() method returns a string joined with given delimiter. In string join method, delimiter is copied for each elements. In case of null element, “null” is added. The join() method is included in java string since JDK 1.8. There are two types of join() methods in java string. Java String join() method […]

Java String Function isEmpty()

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Java String Function intern()

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Java String Function getChars()

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