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Object-Oriented Programming Concept in Java

OOPS( Object-Oriented Programming ) Concept in Java :   As we all know Java is Object Oriented programming language and what exactly it means in simple words to understand can be described as whatever is going to happen by Java , it will be based on some Object.  So next question can be what is Object ? , "Object is the representation or reference of Class to access its properties and use its behaviour ", now next is What is Class in java and answer to this question is "A class in java is the blueprint of Properties and Behaviours of it's own Object" as explained in my previous post  BASIC OVERVIEW OF JAVA  (SESSION 1)   Let's understand through an example : public class FirstJavaProgram { int firstNumber=10; int secondNumber=20;      public int sum(int fNum, int sNum){         return fNum+sNum;     }     public static void main(String[] args) {     //our logics ...

Bubble sort Implementation

Bubble sort  : In bubble sort ,we will select the 1st element and compare with all the remaining element, same process we will continue for all the elements as we are traveling the whole Array 2 times except the element which we have selected to compare with other elements but still it will be consider as n time.    So time complexity for bubble sort will be O(n^2).         space complexity for bubble sort will be O(1). // Bubble Sort class BubbleSort { public static void sort ( int [] array) { int n = array. length ; while ( true ) { boolean swapped = false; for ( int i = 0 ; i < n - 1 ; i++) { if (array[i + 1 ] < array[i]) { swap (array , i , i + 1 ) ; swapped = true; } } if (!swapped) break; } } private static void swap ( int [] array , int i , int j) { int temp = array[i] ;...

Selection sort Implementation

  Selection sort  : In selection sort we will divide the Array in 2 parts , sorted and unsorted and select the min element from unsorted and will copy to sorted array.      Time Complexity for selection sort also is O(n^2).      space complexity for bubble sort will be O(1). class SelectionSort { public static void sort ( int [] array) { int n = array. length ; for ( int i = 0 ; i < n - 1 ; i++) { int min = i ; for ( int j = i + 1 ; j < n ; j++) { if (array[j] < array[min]) { min = j ; } } swap (array , i , min) ; } } private static void swap ( int [] array , int i , int j) { int temp = array[i] ; array[i] = array[j] ; array[j] = temp ; } private static void print ( int [] array) { System. out .print( "[" ) ; for ( int i = 0 ; i < array. lengt...