Write a method named monthApart that accepts four integer parameters representin

Question

Write a method named monthApart that accepts four integer parameters representing two calendar dates. Each date consists of a month (1 through 12) and a day (1 through the number of days in that month [28-31]). The method returns whether the dates are at least a month apart. Assume that all dates in this problem occur during the same year. For example, the following dates are all considered to be at least a month apart from 9/19 (September 19): 2/14, 7/25, 8/2, 8/19, 10/19, 10/20, and 11/5. The following dates are NOT at least a month apart from 9/19: 9/20, 9/28, 10/1, 10/15, and 10/18. Note that the first date could come before or after (or be the same as) the second date. Assume that all parameter values passed are valid.

Sample calls:

Method problem: For this problem, you are supposed to write a Java method as described. You should notwrite a complete Java class; just write the method(s) described in the problem statement.

Call Returns Because monthApart( 6, 14, 9, 21) true June 14th is at least a month before September 21st monthApart( 4, 5, 5, 15) true April 5th is at least a month before May 15th monthApart( 4, 15, 5, 15) true April 15th is at least a month before May 15th monthApart( 4, 16, 5, 15) false April 16th is NOT at least a month before May 15th monthApart( 6, 14, 6, 8) false June 14th is NOT at least a month apart from June 8th monthApart( 7, 7, 6, 8) false July 7th is NOT at least a month apart from June 8th monthApart( 7, 8, 6, 8) true July 8th is at least a month after June 8th monthApart( 10, 14, 7, 15) true October 14th is at least a month after July 15th

Explanation / Answer

import java.util.Scanner;

public class DateDifference {
public static int[] dateArray = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31,
30, 31 };

public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please first date's month");
int m1 = input.nextInt();
System.out.println("Please first date's day");
int d1 = input.nextInt();
System.out.println("Please second date's month");
int m2 = input.nextInt();
System.out.println("Please second date's day");
int d2 = input.nextInt();
boolean isMonthApart = monthapart(m1, d1, m2, d2);
if (isMonthApart) {
System.out.println("Dates are atleast a month apart");
} else {
System.out.println("Dates are not month apart");
}

}

public static boolean monthapart(int m1, int d1, int m2, int d2) {
// Same month so they are not month apart
if (m1 == m2) {
return false;
}
// Difference of month is greater than 1 so date is atleast a month
// apart
if (m1 - m2 > 1) {
return true;
}
int daysDifference = 0;
// If month 1 is before month 2.
if (m2 > m1) {
// Get max days in month 1
int maxDaysMonth1 = dateArray[m1 - 1];
int numberOfDaysMonth1 = maxDaysMonth1 - d1;
daysDifference = numberOfDaysMonth1 + d2;
// Days Difference is greater than maximum number of days in month 1
// then return true
if (daysDifference > maxDaysMonth1) {
return true;
}
} else {
// Month 2 is before month 1
// Get max days in month 2
int maxDaysMonth2 = dateArray[m2 - 1];
int numberOfDaysMonth2 = maxDaysMonth2 - d2;
daysDifference = numberOfDaysMonth2 + d1;
// Days Difference is greater than maximum number of days in month 2
// then return true
if (daysDifference > maxDaysMonth2) {
return true;
}
}
return false;
}
}   

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