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]);
    }
}

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]

Similar codes

0 vote354 views1 answer
Java constructor genertic
Java
0 vote333 views2 answers
Open gallery android
Java
191 votes605 views6 answers
Switch java
Java
0 vote348 views2 answers
Java choose random enum
Java
1 vote329 views1 answer
Javafx textarea new line with shift+enter
Java
4 votes338 views5 answers
Java variables
Java
18 votes334 views2 answers
How to get int from string java
Java
1 vote326 views1 answer
Jaxb exclude field
Java
0 vote314 views1 answer
Scanner library showing element not found exception
Java
2 votes329 views1 answer
Android check if app is running
Java