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 vote265 views1 answer
How to wait until pressing button in tkinter
Python
10 votes265 views2 answers
With open as file python
Python
9 votes264 views4 answers
Python numpy array
Python
1 vote251 views1 answer
How to convert string to function name in python
Python
2 votes306 views1 answer
Partially initialized module 'tkinter' has no attribute 'Tk
Python
0 vote265 views1 answer
Block url selenium python
Python
2 votes251 views4 answers
How to create s3 bucket in aws cli
Python
0 vote326 views1 answer
Randomly shuffle pandas dataframe
Python
0 vote276 views1 answer
Tkinter get child in frame
Python
43 votes254 views1 answer
Abc list
Python