LAB: Praising dates
1 answer:
Answer:
Explanation:
The following is the entire modified code, it takes in the date as an input and continues changing the dates to the desired format. If the input format is wrong it says "Wrong Format" and requests another input. If -1 is passed as an input the program terminates.
import java.util.Scanner;
class DateParser {
public static int getMonthAsInt(String monthString) {
int monthInt;
switch (monthString) {
case "January" :
monthInt = 1;
break;
case "February":
monthInt = 2;
break;
case "March":
monthInt = 3;
break;
case "April":
monthInt = 4;
break;
case "May":
monthInt = 5;
break;
case "June":
monthInt = 6;
break;
case "July":
monthInt = 7;
break;
case "August":
monthInt = 8;
break;
case "September":
monthInt = 9;
break;
case "October":
monthInt = 10;
break;
case "November":
monthInt = 11;
break;
case "December":
monthInt = 12;
break;
default:
monthInt = 0;
}
return monthInt;
}
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
// TODO: Read dates from input, parse the dates to find the one
// in the correct format, and output in m/d/yyyy format
String date = "";
while (!date.equals("-1")) {
String month = "";
String day = "";
String year = "";
System.out.println("Enter date:");
date = scnr.nextLine();
try {
year = date.substring((date.length()-4), date.length());
if (Character.isDigit(date.charAt(date.length()-8))) {
day = date.substring((date.length()-8), date.length()-6);
month = date.substring(0, date.length()-9);
} else {
day = date.substring((date.length()-7), date.length()-6);
month = date.substring(0, date.length()-8);
}
if ((year.length() == 4) && (day.length() > 0) && (day.length() <= 2) && (month.length() >= 3)) {
System.out.println(getMonthAsInt(month) + "/" + day + "/" + year);
} else {
System.out.println("Wrong Format");
}
} catch (Exception e) {
System.out.println("Wrong Format");
}
}
}
}
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<u>Question:</u>
Snapshot of the question has been attached to this response.
<u>Answer:</u>
<u></u>
import java.util.Scanner;
import java.lang.Math;
public class CoordinateGeometry{
public static void main(String []args){
double x1 = 1.0;
double y1 = 2.0;
double x2 = 1.0;
double y2 = 5.0;
double pointsDistance = 0.0;
//Declare a variable to hold the result of (x2 - x1)²
double x;
//Solve (x2 - x1)^2 and store result in the variable x
x = Math.pow(x2 - x1, 2);
//Declare a variable to hold the result of (y2 - y1)²
double y;
//Solve (y2 - y1)^2 and store result in the variable y
y = Math.pow(y2 - y1, 2);
//Now pointsDistance = SquareRootOf(x + y)
pointsDistance = Math.sqrt(x + y);
System.out.println("Points distance: ");
System.out.println(pointsDistance);
return;
}
}
<u>Sample Output:</u>
Points distance:
3.0
<u>Explanation:</u>
The above code has been written in Java and it contains comments explaining important lines of the code. Please go through the comments.
The snapshots of the program and a sample output have been attached to this response.
