每日一题

beer.js

const exchange = ({ money, bottle, cap, drinked }) => {
  if(money === 0 && bottle < 2 && cap < 4) return drinked;
  
  const newDrink = parseInt(money/2) + parseInt(bottle/2) + parseInt(cap/4);
  return exchange({
    money: money % 2,
    cap: cap % 4 + newDrink,
    bottle: bottle % 2 + newDrink,
    drinked: drinked + newDrink,
  });
};

// console.log(
//   exchange({
//     money: 10,
//     bottle: 0,
//     cap: 0,
//     drinked: 0,
//   })
// );

cool

def beers(money,bottle,bottle_cap,sum)
  return sum if money < 2 and bottle < 2 and bottle_cap < 4
  bought = money/2 + bottle/2 + bottle_cap/4
  return bought + beers(money%2, bottle%2+bought, bottle_cap%4+bought, sum)
end