09. Diagonal Attack

function diagonalsAttack(matrixRows) {
  const matrix = matrixRows.map(
    (row) => row.split(' ').map(Number),
  );

  const printMatrix = (arg1) => {
    for (let i = 0; i < arg1.length; i++) {
      console.log(arg1[i].join(' '));
    }
  };

  let sumFirstDiagonal = 0;
  for (let i = 0; i < matrix.length; i++) {
    sumFirstDiagonal += matrix[i][i];
  }
  let sumSecondDiagonal = 0;
  for (let j = 0; j < matrix.length; j++) {
    sumSecondDiagonal += matrix[j][matrix.length - 1 - j];
  }

  if (sumFirstDiagonal === sumSecondDiagonal) {
    for (let q = 0; q < matrix.length; q++) {
      for (let z = 0; z < matrix.length; z++) {
        if (q !== z && q !== matrix.length - 1 - z) {
          matrix[q][z] = sumFirstDiagonal;
        }
      }
    }
    printMatrix(matrix);
  } else {
    printMatrix(matrix);
  }
}