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Diagonal Difference

Given a square matrix, calculate the absolute difference between the sums of its diagonals.

Example:

  • For example, the square matrix matrix is shown below:
1 2 3
4 5 6
9 8 9
  • The left-to-right diagonal = 1 + 5 + 9 = 15
  • The right to left diagonal = 3 + 5 + 9 = 17
  • Their absolute difference is |15 - 17| = 2

Function Description:

  • Complete the diagonalDifference function in the editor below.
  • diagonalDifference diagonalDifference takes the following parameter:
    • int matrix[n][m]: an array of integers

Returns:

  • int: the absolute diagonal difference

Input Format:

  • The first line contains a single integer, n, the number of rows and columns in the square matrix matrix.
  • Each of the next n lines describes a row, matrix[i], and consists of n space-separated integers matrix[i][j].

Constraints:

  • $-100 \le matrix[i][j] \le 100$

Output Format:

  • Return the absolute difference between the sums of the matrix's two diagonals as a single integer.

Sample Input:

11  2  4
4   5  6
10  8  -12

Sample Output:

15

Solution: