// Transpose a matrix (2D array) of numbers (integers or floats) and return the result.

// The matrix is transposed by swapping the rows and columns. The result is a new matrix.

// The original matrix is not changed.

// The input matrix is a 2D array of numbers. The result is a 2D array of numbers.

const transposeMatrix = (matrix) => {

let result = [];

for (let i = 0; i < matrix[0].length; i++) { // loop through columns

result.push([]); // add a new row to the result matrix

}

for (let i = 0; i < matrix.length; i++) { // loop through rows of the input matrix

for (let j = 0; j < matrix[0].length; j++) { // loop through columns of the input matrix

result[j][i] = matrix[i][j]; // swap rows and columns in the result matrix and add the value to the result matrix

}

}

return result;

}

// Driver to test the transposeMatrix function.

console.log(transposeMatrix([[1, 2, 3], [4, 5, 6], [7, 8, 9]])); // Output: [[1, 4, 7], [2, 5, 8], [3, 6, 9]]

// From

// [[ 1, 2, 3 ],

// [ 4, 5, 6 ],

// [ 7, 8, 9 ]]

// To

// → [[1, 4, 7],

// [2, 5, 8],

// [3, 6, 9]]