prime-date.java

importjava.util.*;
importjava.lang.*;
importjava.io.*;
importjava.math.*;

publicclassMain {

publicstaticintmonth[];

publicstaticvoidmain (String[] args) throwsjava.lang.Exception {
Scannerin = newScanner(System.in);

month = newint[15];

Strings = in.nextLine();

StringTokenizerstr = newStringTokenizer(s, "- ");

intd1 = Integer.parseInt(str.nextToken());
intm1 = Integer.parseInt(str.nextToken());
inty1 = Integer.parseInt(str.nextToken());
intd2 = Integer.parseInt(str.nextToken());
intm2 = Integer.parseInt(str.nextToken());
inty2 = Integer.parseInt(str.nextToken());

intresult = findPrimeDates(d1, m1, y1, d2, m2, y2);
System.out.println(result);
 }

publicstaticvoidupdateLeapYear(intyear) {
if(year % 400 == 0) {
month[2] = 29;
 } elseif(year % 100 == 0) {
month[2] = 28;
 } elseif(year % 4 == 0) {
month[2] = 29;
 } else {
month[2] = 28;
 }
 }

publicstaticvoidstoreMonth() {
month[1] = 31;
month[2] = 28;
month[3] = 31;
month[4] = 30;
month[5] = 31;
month[6] = 30;
month[7] = 31;
month[8] = 31;
month[9] = 30;
month[10] = 31;
month[11] = 30;
month[12] = 31;
 }

publicstaticintfindPrimeDates(intd1, intm1, inty1, intd2, intm2, inty2) {
storeMonth();

intresult = 0;

while(true) {
intx = d1;
x = x * 100 + m1;
x = x * 10000 + y1;
if(x % 4 == 0 || x % 7 == 0) {
result = result + 1;
 }
if(d1 == d2 && m1 == m2 && y1 == y2) {
break;
 }
updateLeapYear(y1);
d1 = d1 + 1;
if(d1 > month[m1]) {
m1 = m1 + 1;
d1 = 1;
if(m1 > 12) {
y1 = y1 + 1;
m1 = 1;
 }
 }
 }
returnresult;
 }
}