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ShapeTest2.java
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ShapeTest2.java
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package com.bilgeadam.boost.Marathon01;
import java.util.Scanner;
// layout test for ShapeTest.java
// with english printouts
public class ShapeTest2 {
int firstEdge;
int secondEdge;
int thirdEgde;
int fourthEdge;
int shape;
static Scanner sc = new Scanner(System.in);
public static void main(String[] args) {
ShapeTest2 shapeTest = new ShapeTest2();
shapeTest.readInput();
System.out.println("Bye....");
}
private void readInput() {
shape = 1;
do {
firstEdge = 0;
secondEdge = 0;
thirdEgde = 0;
fourthEdge = 0;
;
System.out.println("\nPlease enter the side lengths of the shape "
+ "(max. 4 sides) and (exit with -1): ");
while (true) {
int i = 1;
firstEdge = this.scanEdge(i);
if (this.isEnd(firstEdge)) {
return;
}
if (this.isExit(firstEdge)) {
break;
}
i++;
secondEdge = scanEdge(i);
if (this.isEnd(secondEdge)) {
return;
}
if (this.isExit(secondEdge)) {
break;
}
i++;
thirdEgde = scanEdge(i);
if (this.isEnd(thirdEgde)) {
return;
}
if (this.isExit(thirdEgde)) {
break;
}
i++;
fourthEdge = scanEdge(i);
if (this.isEnd(fourthEdge)) {
return;
}
if (this.isExit(fourthEdge)) {
break;
}
break;
}
if ((secondEdge != 0) && (thirdEgde != 0)) {
showMenu();
System.out.print("\nSelection: ");
this.doOperation(ShapeTest2.scanString());
} else if (secondEdge == 0) {
System.err.println("It cannot be a single sided shape");
} else if (thirdEgde == 0) {
System.err.println("It cannot be a double-sided shape");
}
} while (true);
}
private void doOperation(String operation) {
int areaCalc = 0;
int perimeterSum = 0;
switch (operation) {
case "1":
perimeterSum = this.doPerimeterCalc(firstEdge, secondEdge, thirdEgde, fourthEdge);
System.out.println("Circumference of figure "+shape+".: "+ perimeterSum);
shape++;
break;
case "2":
areaCalc = this.doAreaCalc(firstEdge, secondEdge, thirdEgde, fourthEdge);
System.out.println("Area of figure "+shape+".: "+ areaCalc);
shape++;
break;
case "3":
perimeterSum = this.doPerimeterCalc(firstEdge, secondEdge, thirdEgde, fourthEdge);
areaCalc = this.doAreaCalc(firstEdge, secondEdge, thirdEgde, fourthEdge);
System.out.println("Circumference of figure "+shape+": "+ perimeterSum);
System.out.println("Area of figure "+shape+": "+ areaCalc);
shape++;
break;
default:
System.out.println("Wrong input!! Try Again.");
System.out.print("\nSelection: ");
doOperation(ShapeTest2.scanString());
}
}
private int doAreaCalc(int firstEdge, int secondEdge, int thirdEgde, int fourthEdge) {
int areaCalc = 0;
if (this.isTriangle(fourthEdge)) {
areaCalc = this.calcTriangleArea(firstEdge, secondEdge, thirdEgde);
} else {
areaCalc = this.calcTrapezoidalArea(firstEdge, secondEdge, thirdEgde, fourthEdge);
}
return areaCalc;
}
private int doPerimeterCalc(int firstEdge, int secondEdge, int thirdEgde, int fourthEdge) {
int perimeterSum = firstEdge + secondEdge + thirdEgde + fourthEdge;
return perimeterSum;
}
private static void showMenu() {
System.out.println("\n1- Circumference");
System.out.println("2- Area");
System.out.println("3- Circumference and Area");
}
private boolean isTriangle(int fourthEdge) {
if (fourthEdge == 0) {
return true;
}
return false;
}
private int calcTriangleArea(int firstEdge, int secondEdge, int thirdEgde) {
int area = 0;
int sum = firstEdge + secondEdge + thirdEgde;
area = (int) Math.sqrt(sum * (sum - firstEdge) * (sum - secondEdge) * (sum - thirdEgde));
return area;
}
private int calcTrapezoidalArea(int firstEdge, int secondEdge, int thirdEgde, int fourthEdge) {
int area = 0;
// trapezoidal area (a+b/2)*h
// But I made a wrong calculation here please ignore
area = (firstEdge + thirdEgde) * secondEdge / 2;
return area;
}
private boolean isExit(int edge) {
if (edge == 0) {
return true;
}
return false;
}
private boolean isEnd(int edge) {
if (edge == -1) {
return true;
}
return false;
}
private int scanEdge(int i) {
System.out.print("Please enter "+i+". side length (end with 0): ");
int number = scanInt();
return number;
}
private static int scanInt() {
int number = sc.nextInt();
return number;
}
private static String scanString() {
String input = sc.next();
return input;
}
}