Homework

index.js

//1.
const subLength = (str, char) => {
	let charInStr = [],
		lowerStr = str.toLowerCase().split(''),
		length = 0;

	lowerStr.forEach((val, index) => {
		if (val === char) {
			charInStr.push(index);
		}
	});

	if (charInStr.length !== 2) {
		return length;
	}

	return str.slice(charInStr[0], charInStr[1]).length + 1;
};

// 2.
const groceries = arr => {
    const len = arr.length;
    if (len == 1)
        return arr[0].item;
    else if (len == 2)
        return arr[0].item + ' and ' + arr[1].item;
    let str = '';
    arr.forEach((obj, indx) => {
        if (indx + 1 == len)
            str += `and ${obj.item}`;
        else if (indx + 2 == len)
            str += `${obj.item} `;
        else
            str += `${obj.item}, `;
    })
    return str;
}