5kyu_PeteTheBaker.js

// 5kyu - Pete, the Baker

// Pete likes to bake some cakes. He has some recipes and ingredients. Unfortunately 
// he is not good in maths. Can you help him to find out, how many cakes he could bake 
// considering his recipes?

// Write a function cakes(), which takes the recipe (object) and the available 
// ingredients (also an object) and returns the maximum number of cakes Pete can bake 
// (integer). For simplicity there are no units for the amounts (e.g. 1 lb of flour or 
// 	200 g of sugar are simply 1 or 200). Ingredients that are not present in the 
// objects, can be considered as 0.

// Examples:

// // must return 2
// cakes({flour: 500, sugar: 200, eggs: 1}, {flour: 1200, sugar: 1200, eggs: 5, milk: 200}); 
// // must return 0
// cakes({apples: 3, flour: 300, sugar: 150, milk: 100, oil: 100}, {sugar: 500, flour: 2000, milk: 2000});

function cakes(recipe, available) {
    let arr = [];
    for(let i in recipe) {
        if(available.hasOwnProperty(i)){
            arr.push(~~(available[i] / recipe[i]));
        } else {
            return 0;
        }
    }
    return Math.min(...arr);
}