implementing different loops for the same challenge

README

Loops


behavioral specifications:
	(think of an ideal use case for a loop)
	- eating, you do it everyday
	weekly meal eater

code specs
	args: 1
		array of 7 arrays
			nested array contains 3 meals, String
	returns: array
		array of Strings
	behavior:
		consumes one food item per meal
		returns all poo at the end of the week.  assume a healthy daily bowl movement schedule


https://www.w3schools.com/js/js_loop_for.asp

(run these in pythontutor)

eater-do-while.js

function eater(all_meals) {
    let returner = [];
    let day_cs = 0;
    let meal = 0;

    do { // 7 days
        do { // 3 meals
            all_meals[day_cs][meal] = "clean plate"
            meal++;
        } while (meal < 3)
        meal = 0;
        returner.push("pooo");
        day_cs++;
    } while (day_cs < 7)
    console.log(all_meals);

    return returner;
}

let meals = [
        [
            "cheese",
            "tomatoes",
            "pickles"],
        [
            "cheese",
            "tomatoes",
            "pickles"],
        [
            "cheese",
            "tomatoes",
            "pickles"],
        [
            "cheese",
            "tomatoes",
            "pickles"],
        [
            "cheese",
            "tomatoes",
            "pickles"],
        [
            "cheese",
            "tomatoes",
            "pickles"],
        [
            "cheese",
            "tomatoes",
            "pickles"]]

console.log(eater(meals))

eater-for-let.js

function eater(all_meals) {
	let returner = [];

	for (let day = 0; day < 7; day++) {
		for (let meal = 0; meal < 3; meal++) {
			all_meals[day][meal] = "clean plate"
		}
		returner.push("pooo");
	}
	console.log(all_meals);

	return returner;
}

let meals = [
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"]]

console.log(eater(meals))

eater-for-var.js

function eater(all_meals) {
	let returner = [];

	for (var day = 0; day < 7; day++) {
		for (var meal = 0; meal < 3; meal++) {
			all_meals[day][meal] = "clean plate"
		}
		returner.push("pooo");
	}
	console.log(all_meals);

	return returner;
}

let meals = [
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"]]

console.log(eater(meals))

eater-while.js

function eater(all_meals) {
	let returner = [];
	let day_cs = 0;
	let meal = 0;

	while (day_cs < 7) { // 7 days
		while (meal < 3) { // 3 meals
			all_meals[day_cs][meal] = "clean plate"
			meal++;
		}
		meal = 0;
		returner.push("pooo");
		day_cs++;
	}
	console.log(all_meals);

	return returner;
}

let meals = [
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"],
		[
			"cheese",
			"tomatoes",
			"pickles"]]

console.log(eater(meals))