Matrix diagonal sum Python

# Problem Link : https://leetcode.com/problems/matrix-diagonal-sum/

class Solution(object):
    def diagonalSum(self, array):
        """
        :type array: List[List[int]]
        :rtype: int
        """
        n = len(array)
        primary = 0
        secondary = 0;
        for i in range(0, n):
            primary += array[i][i]
            secondary += array[i][n-i-1]
        if (n % 2 == 0): return primary + secondary
        else: return primary + secondary - array[n//2][n//2]

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 vote179 views2 answers
Handdle close window action in pyqt5
Python
-1 vote241 views2 answers
Sum of all nan values pandas
Python
8 votes203 views1 answer
Input stdout python
Python
0 vote257 views1 answer
Django refresh form db
Python Django
0 vote230 views1 answer
Python compactar arquivo antes de exportar
Python
0 vote268 views1 answer
Spacegoat meaning
Python
10 votes220 views4 answers
Add row to dataframe with index
Python
2 votes232 views1 answer
How to redirect in flask to the same page
Python Flask
0 vote201 views1 answer
Can list hold different data types in python
Python
33 votes205 views6 answers
Bs4 python
Python