java - I Can't figure out why my logic is wrong for USACO Friday the 13th? -


i use 1 refer monday, 2 refer tuesday etc.
when give years value of 1, returns 1 2 1 3 1 2 2, whereas according usaco grader, should return 2 1 1 3 1 2 2.

this sequence means in span of year, 2 saturdays have date of 13th, 1 sunday has date of 13th etc.

    import java.io.*;     import java.util.*;      class friday {        static boolean isleapyear(int year) {         if(year%4==0){           if(!(year%100==0))             return true;           else if(year % 400 == 0)             return true;           return false;         }         return false;       }       public static void main (string [] args) throws ioexception {         // use bufferedreader rather randomaccessfile; it's faster         bufferedreader f = new bufferedreader(new filereader("friday.in")); // input file name goes above         printwriter out = new printwriter(new bufferedwriter(new filewriter("friday.out")));         int n = integer.parseint(f.readline()); //number of years         int[] count = new int[8];         for(int = 1; < 8; i++)             count[i] = 0;         for(int = 1900,firstdayoftheyear=1; < 1900+n; i++) {           for(int month=1, monthdayone = firstdayoftheyear; month <= 12; month++) {             if(monthdayone > 0 && monthdayone <= 2)               count[8-monthdayone]++;             else               count[monthdayone-2]++;             if(month==2){               if(isleapyear(i))                 monthdayone++;             }             else if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12)               monthdayone += 3;             else               monthdayone += 2;             monthdayone = monthdayone > 7 ? monthdayone%7: monthdayone; //recalibrate           }           firstdayoftheyear++;           firstdayoftheyear = firstdayoftheyear > 7? firstdayoftheyear % 7 : firstdayoftheyear;         }         //in order specified         out.print(count[6]+" ");         out.print(count[7]+" ");         out.print(count[1]+" ");         out.print(count[2]+" ");         out.print(count[3]+" ");         out.print(count[4]+" ");         out.print(count[5]+" \n");         out.close();         system.exit(0);       }     }

use switch case statement, make logic easier follow


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