Matrix Diagonal Sum

// 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 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]

Similar codes

-1 vote168 views1 answer
Spring boot show sql
Java Spring
0 vote146 views1 answer
Spring boot maven run with profile
Java Spring
0 vote135 views1 answer
How to initialize a string in java
Java
1 vote132 views4 answers
C code to java converter
Java
1 vote119 views1 answer
Functional remove java
Java
1 vote134 views1 answer
This project uses AndroidX dependencies, but the 'android.useAndroidX' property is not enabled. Set this property to true in the gradle.properties file and retry.
Java
2 votes133 views1 answer
Java set value of arraylist
Java
0 vote176 views1 answer
Is java good then c++ is good
Java
0 vote198 views1 answer
Spring jpa add field to many to many table
Java
0 vote116 views1 answer
Javax.servlet.filter
Java