I have a file called "magic.txt" which contains the following numbers:
3
8 1 6
3 5 7
4 9 2
The "3" stands for the NxN size of the square, and the rest of the numbers is the potential magic square. I wrote code that can sum up all the rows and the columns and the first diagonal (namely, the numbers 8, 5, 2). However I have no clue how to solve for the other diagonal (namely, 6, 5, 4). Below is my code for the first diagonal.
def sum_diagonal():
with open("magic.txt") as file:
text = file.readlines() # Read magic.txt file
square_size = int(text.pop(0)) # Pop off the square size from the list and converting it to an integer
terminator = int(text.pop(square_size)) # Pop off the -1 terminator
sumdia1 = 0
for x in range(square_size): # This for loop is to loop through all the rows and add up the diagonal.
text_list = text[x].split() # Splits the y-th index into its own list (multi-dimensional list)
sumdia1 = sumdia1 + int(text_list[x]) # Sum up the diagonal 1
print("Sum of diagonal 1:", sumdia1)
Any suggestions would be appreciated.
You may notice the index of the other diagonal is (i, 2-i), or (i, square_size-1-i) in your case.
So you can do something similar to before
def sum_diagonal():
with open("magic.txt") as file:
text = file.readlines() # Read magic.txt file
square_size = int(text.pop(0)) # Pop off the square size from the list and converting it to an integer
terminator = int(text.pop(square_size)) # Pop off the -1 terminator
sumdia1 = 0
for x in range(square_size): # This for loop is to loop through all the rows and add up the diagonal.
text_list = text[x].split() # Splits the y-th index into its own list (multi-dimensional list)
sumdia1 = sumdia1 + int(text_list[x]) # Sum up the diagonal 1
print("Sum of diagonal 1:", sumdia1)
sumdia2 = 0
for x in range(square_size): # This for loop is to loop through all the rows and add up the diagonal.
text_list = text[x].split() # Splits the y-th index into its own list (multi-dimensional list)
sumdia2 = sumdia2 + int(text_list[square_size-1-x]) # Sum up the diagonal 1
print("Sum of diagonal 2:", sumdia2)