Problem Description: Expand on 2 by implementing Insertion Sort and displaying the dates sorted after adding...
Problem Description:
Expand on 2 by implementing Insertion Sort and displaying the dates sorted after adding one to all dates. Run your code using the attached input files outputlong.txtoutputlab3.txt. Please note that your the dates that are sorted will be the ones after 1 day has been added to them.
Sample Output: (green is user input)
Run #2 using sample file outputlab3.txt
Enter name of file to import or the word null to bypass: outputlab3.txt How many assessments in this course - must be greater than 0? Enter due dates: 1: Enter month - between 1 and 12: Enter day - between 1 and 31: Enter year: 2: Enter month - between 1 and 12: Enter day - between 1 and 31: Enter year: 3: Enter month - between 1 and 12: Enter day - between 1 and 31: Enter year: The due dates are: 1: 2017/2/14 2: 2017/2/17 3: 2018/2/16 Due Dates with one day added are The due dates are: 1: 2017/2/15 2: 2017/2/18 3: 2018/2/17 Due Dates sorted are The due dates are: 1: 2017/2/15 2: 2017/2/18 3: 2018/2/17 Do another (y/n)? n
import java.util.Scanner;
public class DueDates {
private MyDate[] dueDates;
public DueDates() {
dueDates = new MyDate[10];}
public DueDates(int max) {
dueDates = new MyDate[max]; }
public boolean inputDueDates(Scanner in) {
System.out.println("Enter due dates:");
for (int i = 0; i < dueDates.length; i++) {
dueDates[i] = new MyDate();
System.out.println((i + 1) + ":");
dueDates[i].inputDate(in); }
return true;}
public void addOne() {
for (int i = 0; i < dueDates.length; i++)
dueDates[i].addOne();}
public String toString() {
String str = " ";
for (int i = 0; i < dueDates.length; i++) {
str += (i + 1) + ": " + dueDates[i].toString() + "\n";
} return str; }}
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
public class Lab2 {
public static void main(String[] args) {
String inputFile,outFile;
int size;
Scanner keyboard = new Scanner(System.in);
while(true) {
System.out.print("Enter name of file to import or the word null to
bypass :");
inputFile=keyboard.next();
if(inputFile.equalsIgnoreCase("NULL")) {
System.out.print("How many assessments in this course - must be
greater than 0?");
int assesments = keyboard.nextInt();
DueDates dates = new DueDates(assesments);
dates.inputDueDates(keyboard);
System.out.println("The due dates are:\n" +
dates.toString());
dates.addOne();
System.out.println("\nDue Dates with one date added are:");
System.out.println("The due dates are:\n" +
dates.toString());
System.out.print("Enter name of file to write to null to bypass
:");
outFile=keyboard.next();
if(!outFile.equalsIgnoreCase(null)) {
try {
FileWriter fw=new FileWriter(new File(outFile));
fw.write("Due Dates are:\n");
fw.write(dates.toString());
fw.close();
} catch (IOException e) {
e.printStackTrace();
} } }
else {
int day,month,year;
try {
Scanner fileRead=new Scanner(new File(inputFile));
size=fileRead.nextInt();
MyDate dates[]=new MyDate[size];
for(int i=0;i<size;i++) {
month=fileRead.nextInt();
day=fileRead.nextInt();
year=fileRead.nextInt();
dates[i]=new MyDate(month,day,year); }
fileRead.close();
System.out.println("The due dates are:\n");
for(int i=0;i<size;i++) {
System.out.println(dates[i].toString()); }
for(int i=0;i<size;i++) {
dates[i].addOne(); }
System.out.println("\nDue Dates with one date added are:");
System.out.println("The due dates are:\n");
for(int i=0;i<size;i++) {
System.out.println(dates[i].toString()); }
System.out.print("Enter name of file to write to null to bypass
:");
outFile=keyboard.next();
if(!outFile.equalsIgnoreCase(null)) {
try {
FileWriter fw=new FileWriter(new File(outFile));
fw.write("Due Dates are:\n");
for(int i=0;i<size;i++) {
fw.write(dates[i].toString()+"\n"); }
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}}
System.out.print("\nDo another (Y/N) ::");
char ch = keyboard.next(".").charAt(0);
if(ch=='Y'||ch=='y') {
continue; }
else {
break;
} } }}
import java.util.Scanner;
public class MyDate {
private int day = 1;
private int month = 1;
private int year = 2018;
public MyDate() { }
public MyDate( int month,int day, int year) {
this.day = day; this.month = month; this.year = year; }
public String toString() {
return new String("" + year + "/" + month + "/" + day); }
public boolean inputDate(Scanner in) {
month = 0; day = 0; year = 0;
do {
System.out.print("Enter month - between 1 and 12: ");
if (in.hasNextInt())
this.month = in.nextInt();
else {
System.out.println("Invalid month input");
in.next(); }
} while (this.month <= 0 || this.month > 12);
do {
System.out.print("Enter day - between 1 and 31: ");
if (in.hasNextInt())
this.day = in.nextInt();
else {
System.out.println("Invalid day input");
in.next(); }
} while (this.day <= 0
|| this.day > 31
|| (this.month == 2 && this.day > 29)
|| (this.day > 30 && (this.month == 9 || this.month == 4
|| this.month == 6 || this.month == 11)));
do {
System.out.print("Enter year: ");
if (in.hasNextInt())
this.year = in.nextInt();
else {
System.out.println("Invalid day input");
in.next();
} } while (this.year <= 0);
return true; }
public void addOne() {
int monDays[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
if(month==12 && day==monDays[month-1]){
year++;
month=1;
day=1;}
else if(day==monDays[month-1]){
month++;
day=1;}
else if(day<monDays[month-1]){
day++;}
else if(day==monDays[month-1]){
day=1;
month++;
} } }
Homework Answers
// MyDate.java
import java.util.Scanner;
public class MyDate implements Comparable<MyDate>{
private int day = 1;
private int month = 1;
private int year = 2018;
public MyDate() { }
public MyDate( int month,int day, int year) {
this.day = day; this.month = month; this.year = year;
}
public String toString() {
return new String("" + year + "/" + month + "/" + day);
}
public boolean inputDate(Scanner in) {
month = 0; day = 0; year = 0;
do {
System.out.print("Enter month - between 1 and 12: ");
if (in.hasNextInt())
this.month = in.nextInt();
else {
System.out.println("Invalid month input");
in.next();
}
} while (this.month <= 0 || this.month > 12);
do {
System.out.print("Enter day - between 1 and 31: ");
if (in.hasNextInt())
this.day = in.nextInt();
else {
System.out.println("Invalid day input");
in.next(); }
} while (this.day <= 0
|| this.day > 31
|| (this.month == 2 && this.day > 29)
|| (this.day > 30 && (this.month == 9 || this.month == 4
|| this.month == 6 || this.month == 11)));
do {
System.out.print("Enter year: ");
if (in.hasNextInt())
this.year = in.nextInt();
else {
System.out.println("Invalid day input");
in.next();
} } while (this.year <= 0);
return true;
}
public void addOne() {
int monDays[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
if(month==12 && day==monDays[month-1]){
year++;
month=1;
day=1;
}
else if(day==monDays[month-1]){
month++;
day=1;
}
else if(day<monDays[month-1]){
day++;
}
else if(day==monDays[month-1]){
day=1;
month++;
}
}
// function to compare two dates
// returns -1 if this date occurs before other
// returns 1 if this date occurs after other
// returns 0 if this date is same as other
public int compareTo(MyDate other)
{
if(year < other.year)
{
return -1;
}else if(year > other.year)
{
return 1;
}else
{
if(month < other.month)
return -1;
else if(month > other.month)
return 1;
else
{
if(day < other.day)
return -1;
else if(day > other.day)
return 1;
else
return 0;
}
}
}
}
//end of MyDate.java
//DueDates.java
import java.util.Scanner;
public class DueDates {
private MyDate[] dueDates;
public DueDates() {
dueDates = new MyDate[10];
}
public DueDates(int max) {
dueDates = new MyDate[max];
}
public boolean inputDueDates(Scanner in) {
System.out.println("Enter due dates:");
for (int i = 0; i < dueDates.length; i++) {
dueDates[i] = new MyDate();
System.out.println((i + 1) + ":");
dueDates[i].inputDate(in);
}
return true;
}
public void addOne() {
for (int i = 0; i < dueDates.length; i++)
dueDates[i].addOne();
}
public String toString() {
String str = " ";
for (int i = 0; i < dueDates.length; i++) {
str += (i + 1) + ": " + dueDates[i].toString() + "\n";
}
return str;
}
// method to sort the dueDates array using insertion sort
public void sort()
{
MyDate key;
int i,j;
for(i=1;i<dueDates.length;i++)
{
j = i-1;
key = dueDates[i];
while(j >=0 && dueDates[j].compareTo(key) > 0)
{
dueDates[j+1] = dueDates[j];
j--;
}
dueDates[j+1] = key;
}
}
}
//end of DueDates.java
//Lab2.java
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
public class Lab2 {
// method to sort dates array using insertion sort
public static void sort(MyDate dates[])
{
MyDate key;
int i,j;
for(i=1;i<dates.length;i++)
{
j = i-1;
key = dates[i];
while(j >=0 && dates[j].compareTo(key) > 0)
{
dates[j+1] = dates[j];
j--;
}
dates[j+1] = key;
}
}
public static void main(String[] args) {
String inputFile,outFile;
int size;
Scanner keyboard = new Scanner(System.in);
while(true) {
System.out.print("Enter name of file to import or the word null to bypass :");
inputFile=keyboard.next();
if(inputFile.equalsIgnoreCase("NULL")) {
System.out.print("How many assessments in this course - must be greater than 0?");
int assesments = keyboard.nextInt();
DueDates dates = new DueDates(assesments);
dates.inputDueDates(keyboard);
System.out.println("The due dates are:\n" + dates.toString());
dates.addOne();
System.out.println("\nDue Dates with one date added are:");
System.out.println("The due dates are:\n" + dates.toString());
System.out.println("Due Dates sorted are :");
dates.sort();
System.out.println("The due dates are:\n" + dates.toString());
System.out.print("Enter name of file to write to null to bypass :");
outFile=keyboard.next();
if(!outFile.equalsIgnoreCase(null)) {
try {
FileWriter fw=new FileWriter(new File(outFile));
fw.write("Due Dates are:\n");
fw.write(dates.toString());
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}else
{
int day,month,year;
try {
Scanner fileRead=new Scanner(new File(inputFile));
size=fileRead.nextInt();
MyDate dates[]=new MyDate[size];
for(int i=0;i<size;i++) {
month=fileRead.nextInt();
day=fileRead.nextInt();
year=fileRead.nextInt();
dates[i]=new MyDate(month,day,year);
}
fileRead.close();
System.out.println("The due dates are:\n");
for(int i=0;i<size;i++) {
System.out.println(dates[i].toString());
}
for(int i=0;i<size;i++) {
dates[i].addOne();
}
System.out.println("\nDue Dates with one date added are:");
System.out.println("The due dates are:\n");
for(int i=0;i<size;i++) {
System.out.println(dates[i].toString());
}
System.out.println("Due Dates sorted are :");
sort(dates);
System.out.println("The due dates are:\n");
for(int i=0;i<size;i++) {
System.out.println(dates[i].toString());
}
System.out.print("Enter name of file to write to null to bypass :");
outFile=keyboard.next();
if(!outFile.equalsIgnoreCase(null)) {
try {
FileWriter fw=new FileWriter(new File(outFile));
fw.write("Due Dates are:\n");
for(int i=0;i<size;i++) {
fw.write(dates[i].toString()+"\n"); }
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}catch (FileNotFoundException e) {
e.printStackTrace();
}
}
System.out.print("\nDo another (Y/N) ::");
char ch = keyboard.next(".").charAt(0);
if(ch=='Y'||ch=='y') {
continue;
}else
break;
}
keyboard.close();
}
}
//end of Lab2.java
Output:
Input file:
Output:
Add Answer to:
Problem Description:
Expand on 2 by implementing Insertion Sort and displaying the
dates sorted after adding...
this needs to be in Java: use a comparator class which is passed into the sort...
this needs to be in Java:
use a comparator class which
is passed into the sort method that is available on the
ArrayList.
import java.util.Scanner;
public class Assign1{
public static
void main(String[] args){
Scanner reader = new Scanner (System.in);
MyDate todayDate = new MyDate();
int choice = 0;
Library library = new Library();
while (choice != 6){
displayMainMenu();
if (reader.hasNextInt()){
choice = reader.nextInt();
switch(choice){
case 1:
library.inputResource(reader, todayDate);
break;
case 2:
System.out.println(library.resourcesOverDue(todayDate));
break;
case 3:
System.out.println(library.toString());
break;
case 4:
library.deleteResource(reader,...
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this needs to be in Java:
use a comparator class which
is passed into the sort method that is available on the
ArrayList.
import java.util.Scanner;
public class Assign1{
public static
void main(String[] args){
Scanner reader = new Scanner (System.in);
MyDate todayDate = new MyDate();
int choice = 0;
Library library = new Library();
while (choice != 6){
displayMainMenu();
if (reader.hasNextInt()){
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HINT
1)-Write a method to accept n integer number between 0 and 100 and return the average. 2)-Write a method to convert an the letter grade as follow. integer number between 0 and 100 to latter grade A to F and return. 100-90->A 89-80->B 79-70->C 69-60->D 00-59->F 3)-Write a method to compute GPA for following letter grade and return the GPA value. A =>4.0 B ->3.0 C->20 D->1.0 Hint for option 1 1 import java.util.Scanner 2 public class ProjPart2 3...
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