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 vote387 views1 answer
Django command to fetch all columns of a table
Python Django
1 vote347 views1 answer
Import numpy financial python
Python
0 vote492 views1 answer
Raspbian run a python script at startup
Python
43 votes334 views1 answer
Abc list
Python
2 votes339 views2 answers
Copy image from one folder to another in python
Python
0 vote345 views1 answer
How to use fastapi ApiClient with pytest
Python
0 vote319 views1 answer
How to create a joystick in pyqt4
Python
0 vote328 views1 answer
Pandas nat to null?
Python
0 vote366 views1 answer
Query a PSQL Database From Python
Python
0 vote316 views2 answers
Python randint with leading zero
Python