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YogenRaiiYogenRaii
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unit test for Calender API is added
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‎src/main/java/com/eprogrammerz/examples/algorithm/general/MatrixRotation.java‎

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package com.eprogrammerz.examples.algorithm.general;
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/**
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* Created by 542596 on 3/5/2017.
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*/
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public class MatrixRotation {
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public static void main(String[] args) {
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int[][] twoD = new int[][]{
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/*{1,2},
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{3,4}*/
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{1,2,3},
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{4,5,6},
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{7,8,9}
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};
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flipMatrix(twoD);
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for(int i = 0; i< twoD.length; i++) {
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for(int j = 0; j <twoD[0].length; j++) {
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System.out.print(twoD[i][j] + " ");
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}
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System.out.println();
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}
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}
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private static void flipMatrix(int[][] matrix) {
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for(int row = 0; row < matrix.length/2; row++) {
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int[] singleRow = matrix[matrix.length - row -1];
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singleRow = flipArray(singleRow);
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int[] tempArr = matrix[row];
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tempArr = flipArray(tempArr);
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matrix[row] = singleRow;
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matrix[matrix.length - row - 1] = tempArr;
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}
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if(matrix.length % 2 != 0) {
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int[] midRow = flipArray(matrix[matrix.length / 2]);
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matrix[matrix.length / 2] = midRow;
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}
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}
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private static int[] flipArray(int[] singleRow) {
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int[] reversedData = new int[singleRow.length];
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int i;
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for(i=0; i < singleRow.length; i++)
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{
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reversedData[i] = singleRow[(singleRow.length - i -1)];
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}
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return reversedData;
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}
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}

‎src/main/java/com/eprogrammerz/examples/general/inheritance/AccountCalculator.java‎

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package com.eprogrammerz.examples.general.inheritance;
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/**
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* Created by 542596 on 3/3/2017.
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*/
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public class AccountCalculator {
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public static void main(String args[]) {
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System.out.println(new AccountCalculator().findTotalSaving(new int[]{30,40}, new int[]{10,20}) == 500);
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}
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public static int savings = 0;
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private static int findTotalSaving(int[] credits, int[] debits) {
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for(int i = 0; i < credits.length; i++) {
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savings += credits[i];
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}
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for (int i =0; i < debits.length; i++) {
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savings += debits[i];
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}
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return savings;
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}
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}

‎src/main/java/com/eprogrammerz/examples/general/inheritance/drawbacks/InheritanceFragality.java‎

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package com.eprogrammerz.examples.general.inheritance.drawbacks;
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/**
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* Created by 542596 on 3/2/2017.
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*/
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public class InheritanceFragality {
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public static void main(String[] args) {
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Square square = new Square(5);
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System.out.println(square.calculateArea());
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square.setBreadth(9);
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System.out.println(square.calculateArea());
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}
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}
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class Square extends Rectangle {
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public Square(int side) {
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super(side, side);
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}
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}
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class Rectangle {
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private int length;
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private int breadth;
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public Rectangle(int length, int breadth) {
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this.length = length;
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this.breadth = breadth;
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}
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public int calculateArea() {
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return length * breadth;
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}
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public int getLength() {
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return length;
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}
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public void setLength(int length) {
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this.length = length;
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}
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public int getBreadth() {
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return breadth;
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}
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public void setBreadth(int breadth) {
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this.breadth = breadth;
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}
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}

‎src/main/java/com/eprogrammerz/examples/general/inheritance/drawbacks/InheritanceISAviolate.java‎

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package com.eprogrammerz.examples.general.inheritance.drawbacks;
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import java.util.ArrayList;
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/**
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* Created by 542596 on 3/2/2017.
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*/
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public class InheritanceISAviolate {
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public static void main(String[] args) {
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//here LSP is being violated
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ArrayList<Integer> integers = new Stack<>();
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// integers.push(); //violates the ISA relationship
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}
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}
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class Stack<T> extends ArrayList<T>{
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private int stackPointer;
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public void push(T article) {}
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public T pop() { return null;}
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}

‎src/main/java/com/eprogrammerz/examples/general/inheritance/drawbacks/InheritanceISAviolate2.java‎

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package com.eprogrammerz.examples.general.inheritance.drawbacks;
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import java.util.Vector;
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/**
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* Created by 542596 on 3/2/2017.
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*/
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public class InheritanceISAviolate2 {
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public static void main(String[] args) {
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Vector<Integer> myVector = new MyVector<>();
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// myVector.addElement();
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}
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}
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class MyVector<T> extends Vector<T> {
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public void addElement(T t){}
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}
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class MyVectorComp<T> {
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private Vector<T> vector = new Vector<T>();
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public void addElement(T t) {}
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}

‎src/main/java/com/eprogrammerz/examples/general/inheritance/exception/Child.java‎

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public void parentMethod() {
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System.out.println("Parent Overriden...");
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}
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public final void finalMethod() {
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Thread thread= new Thread();
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}
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}

‎src/main/java/com/eprogrammerz/examples/general/inheritance/exception/Parent.java‎

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public void parentMethod() throws IOException {
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System.out.println("In Parent...");
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}
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public void finalMethod() {
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}
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}

‎src/main/java/com/eprogrammerz/examples/testing/junitCalender/CurrentDayService.java‎

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package com.eprogrammerz.examples.testing.junitCalender;
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/**
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* Created by 542596 on 3/3/2017.
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*/
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public interface CurrentDayService {
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int getCurrentDay();
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}

‎src/main/java/com/eprogrammerz/examples/testing/junitCalender/CurrentDayServiceImpl.java‎

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package com.eprogrammerz.examples.testing.junitCalender;
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import java.util.Calendar;
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/**
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* Created by 542596 on 3/3/2017.
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*/
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public class CurrentDayServiceImpl implements CurrentDayService {
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@Override
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public int getCurrentDay() {
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Calendar calendar = Calendar.getInstance();
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return calendar.get(Calendar.WEEK_OF_MONTH);
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}
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}

‎src/main/java/com/eprogrammerz/examples/testing/junitCalender/DateManipulator2.java‎

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package com.eprogrammerz.examples.testing.junitCalender;
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/**
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* Created by 542596 on 3/3/2017.
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*/
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public class DateManipulator2 {
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}

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