Python diagonal sum

# A simple Python3 program to find
# sum of diagonals
MAX = 100
 
def printDiagonalSums(mat, n):
 
    principal = 0
    secondary = 0
    for i in range(0, n):
        principal += mat[i][i]
        secondary += mat[i][n - i - 1]
         
    print("Principal Diagonal:", principal)
    print("Secondary Diagonal:", secondary)
 
# Driver code
a = [[ 1, 2, 3, 4 ],
     [ 5, 6, 7, 8 ],
     [ 1, 2, 3, 4 ],
     [ 5, 6, 7, 8 ]]
printDiagonalSums(a, 4)
 
# This code is contributed
# by ihritik

Source: geeksforgeeks.org

Sum of diagonal numpy

arr= np.arange(16)
arr= np.reshape(arr,(4,4))

a=np.diagonal(arr, 0,0,1)

result=sum(a)
print(result)

-1

Source: numpy.org

Similar codes

0 vote154 views1 answer
Python remove suffix
Python
0 vote156 views1 answer
F string add 0 before python
Python
0 vote146 views1 answer
Sort lexo python
Python
0 vote156 views1 answer
Python -c
Python
0 vote152 views1 answer
Transformers bert
Python
5 votes174 views2 answers
Python write a dictionary to file
Python
1 vote155 views2 answers
How to take input in python a list using map
Python
-1 vote176 views1 answer
Python serial port
Python
0 vote147 views1 answer
Pyqt5 qpush button pressed
Python
-4 votes150 views2 answers
The Dreamers
Python