Create an Array of Arrays (Rows) From One Flat Array

createArrayOfArraysFromArray.ts

const createRowsFromArray = (flatArray: string[]): string[][] => {
    const remainder = flatArray.length % 2;

    for (let i = 0; i < flatArray.length - 1; i = i + 2) {
        console.log(`${flatArray[i]} | ${flatArray[i + 1]}`);
    }

    if (remainder) {
        console.log(flatArray[flatArray.length - 1]);
    }

    return [
        ['foo', 'bar', 'baz'],
        ['foo', 'bar', 'baz'],
        ['foo', 'bar', 'baz'],
    ];
};

// red, orange, yellow, green, blue, indigo, and violet
const flatArrayOfSix = ['red', 'orange', 'yellow', 'green', 'blue', 'indigo'];

const flatArrayOfSeven = ['red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'violet'];

createRowsFromArray(flatArrayOfSix);

console.log('');
console.log('');
console.log('');

createRowsFromArray(flatArrayOfSeven);

console.log('');
console.log('');
console.log('');

createRowsFromArray(['red', 'orange']);

console.log('');
console.log('');
console.log('');

createRowsFromArray(['red']);

console.log('');
console.log('');
console.log('');

createRowsFromArray([]);