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 vote188 views1 answer
Explain the use of return keyword python
Python
1 vote260 views1 answer
Jinja2 template import html with as
Python
0 vote242 views1 answer
Percentage change between the current and the prior element.
Python
1 vote184 views1 answer
Data Compression in python
Python
37 votes194 views5 answers
Python print same line
Python
105 votes218 views6 answers
Split string python
Python
0 vote208 views1 answer
Python split string with a seperator
Python
5 votes186 views1 answer
How to make a sigmoid function in python
Python
0 vote201 views1 answer
MASS algorithm python
Python
4 votes184 views2 answers
Python input comma separated values
Python