#itfield

Crazy Day of the Week!

Closed the previous day around 12.30AM by assigning the tasks to the night shift resources and i hit the sack. In another 30 mts my phone buzzed!

Cleverest Resource of my Team: “Heh mate! successfully completed the tasks assigned! We all good for the campaign tomorrow :)” !

Crazy Me: “Really”… the enthusiasm in him drove me nuts.. That’s not possible – my mind voice. “Just send me an reply to…

class QueenChessBoard:    def __init__(self,size):        self.size=size        self.columns=[]

   def place_in_next_row(self,column):        self.columns.append(column)

   def remove_in_current_row(self):        return self.columns.pop()

   def is_this_column_safe_in_next_row(self,column):        row=len(self.columns)

       for q in self.columns:            if column == q:                return False

       for qr,qc in enumerate(self.columns):            if qc-qr == column-row:                return False

       for qr,qc in enumerate(self.columns):            if ((self.size-qc)-qr)==((self.size-column)-row):                return False

       return True

   #Display the chessboard    def display(self):        for row in range(self.size):            for column in range(self.size):                if column == self.columns[row]:                    print('Q',end=' ')                else:                    print('.',end=' ')            print()

def solve_queen(size):    board = QueenChessBoard(size)    no_of_solutions=0    row=0    column=0

   while True:        while column<size:            if board.is_this_column_safe_in_next_row(column):                board.place_in_next_row(column)                row=row+1                column=0                break            else:                column=column+1

       if(column==size or row==size):            if row==size:                board.display()                print()                no_of_solutions+=1

               board.remove_in_current_row()                row=row-1            try:                prev_column=board.remove_in_current_row()

           except IndexError:                break

           row=row-1            column=1+prev_column

       print("Number of Solutions: ",no_of_solutions)