Transpose matrix js

index.js

const matrix = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9],
    [10, 11, 12]
];

const transposeMatrix = (matrix) => {
    const rows = matrix.length;
    const cols = matrix[0].length;

    const transposeMatrix = [];
    for (let i = 0; i < cols; i++){
        transposeMatrix[i] = [];
        for (let j = 0; j < rows; j++) {
            transposeMatrix[i][j] = matrix[j][i];
        }
    }

    return transposeMatrix;
}

console.log(transposeMatrix(matrix));