Write an R program to calculate the sum of the diagonal elements of a matrix.

Easy

Matrix: 
 [,1] [,2] [,3]
[1,] 1 2 3
[2,] 4 5 6
[3,] 7 8 9

Diagonal Sum: 15

Time: 2s · Memory: 256 MB

Code Editor

00:00

# Predefined structure matrix <- matrix(1:9, nrow = 3) diagonal_sum <- sum(diag(matrix)) print(paste("Diagonal Sum:", diagonal_sum))

Input

Matrix: 
 [,1] [,2] [,3]
[1,] 1 2 3
[2,] 4 5 6
[3,] 7 8 9

Expected Output

Diagonal Sum: 15

Custom Input (stdin)

Program Output

> Run your code to see console output.

Programming Exercises