샘성의 iOS 개발 일지

문제 설명: Given a square matrix, calculate the absolute difference between the sums of its diagonals. For example, the square 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 = 9 + 5 + 3 = 17. Their absolute difference is |15 - 17|. Complete the diagonalDifference function in the editor below. diagonalDifference takes the following par..