Leetcode diagonal sum

Matrix diagonal sum leetcode

# 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]

Source: grepper.com

Matrix diagonal sum leetcode

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

class Solution {
    public int diagonalSum(int[][] mat) {
        int n = mat.length;
        int principal = 0, secondary = 0;
        for (int i = 0; i < n; i++) {
            principal += mat[i][i];
            secondary += mat[i][n - i - 1];
        }
        return n%2 == 0 ? (principal + secondary) : (principal + secondary - mat[n/2][n/2]);
    }
}

Source: grepper.com

Similar codes

8 votes126 views2 answers
Python using webbrowser
Python
0 vote133 views1 answer
Wexpect in python
Python
0 vote134 views1 answer
Python test mock class method
Python
2 votes161 views1 answer
Switching keys and values in a dictionary in python [duplicate]
Python
0 vote129 views1 answer
Foreignkey as users from a user group django
Python
0 vote131 views1 answer
How to sum the revenue from every day in a dataframe python
Python
15 votes141 views3 answers
Two sum python
Python
32 votes136 views4 answers
Python check if list contains value
Python
3 votes136 views1 answer
How to exit command prompt
Python
84 votes131 views6 answers
Sort dataframe by column
Python