Day of the Week Java

PROGRAM TO FIND THE DAY OF THE WEEK USING TOMOHIKO SAKAMOTO'S ALGORITHM



class tomohiko_sakamoto
{
    // function to implement tomohiko sakamoto algorithm
    public static int day_of_the_week(int y, int m, int d)
    {
        // array with leading number of days values
        int t[] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 };
          
        // if month is less than 3 reduce year by 1
        if (m < 3)
            y -= 1;
          
        return (y + y / 4 - y / 100 + y / 400 + t[m - 1] + d) % 7;
    }
    // Driver Code
    public static void main(String args[])
    {
        int day = 13, month = 7, year = 2017;
        System.out.println(day_of_the_week(year, month, day));
    }
}

OUTPUT
 4

Comments

Post a Comment

Popular posts from this blog

Solve the Sudoku Python

PROGRAM TO SOLVE SUDOKU # A Utility Function to print the Grid def print_grid(arr):      for i in range ( 9 ):          for j in range ( 9 ):              print arr[i][j],          print ( 'n' )              # Function to Find the entry in # the Grid that is still  not used # Searches the grid to find an # entry that is still unassigned. If # found, the reference parameters # row, col will be set the location # that is unassigned, and true is # returned. If no unassigned entries # remains, false is returned. # 'l' is a list  variable that has # been passed from the solve_sudoku function # to keep track of incrementation # of Rows and Columns def find_empty_location(arr, l):      for row in range ( 9 ):       ...
Read more

Solve the Sudoku Java

PROGRAM TO SOLVE SUDOKU class GFG {      public static boolean isSafe( int [][] board,                                   int row, int col,                                   int num)      {          // Row has the unique (row-clash)          for ( int d = 0 ; d < board.length; d++)          {                             // Check if the number we are trying to   ...
Read more

Find Duplicates Java

PROGRAM TO FIND REPEATING NUMBERS IN AN ARRAY class MAIN {           public static void main(String args[]) {          int numRay[] = { 0 , 4 , 3 , 2 , 7 , 8 , 2 , 3 , 1 };               for ( int i = 0 ; i < numRay.length; i++) {              numRay[numRay[i] %  numRay.length] = numRay[numRay[i] %  numRay.length] + numRay.length;          }          System.out.println( "The repeating elements are : " );          for ( int i = 0 ; i < numRay.length; i++) {              if (numRay[i] >= numRay.length* 2 ) {                ...
Read more