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docs: add Spanish docs
2018-10-08 17:34:43 +00:00
---
id: aa2e6f85cab2ab736c9a9b24
title: Cash Register
localeTitle: Caja registradora
isRequired: true
challengeType: 5
---
## Description
<section id='description'>
Diseñe una función de cajón de la caja registradora <code>checkCashRegister()</code> que acepte el precio de compra como primer argumento ( <code>price</code> ), el pago como segundo argumento ( <code>cash</code> ) y el cajón de efectivo ( <code>cid</code> ) como tercer argumento.
<code>cid</code> es una matriz 2D que muestra la moneda disponible.
La función <code>checkCashRegister()</code> siempre debe devolver un objeto con una clave de <code>status</code> y una clave de <code>change</code> .
Devuelva <code>{status: &quot;INSUFFICIENT_FUNDS&quot;, change: []}</code> si el efectivo en el cajón es inferior al cambio debido, o si no puede devolver el cambio exacto.
Devuelva <code>{status: &quot;CLOSED&quot;, change: [...]}</code> con cash-in-drawer como valor del <code>change</code> clave si es igual al cambio debido.
De lo contrario, devuelva <code>{status: &quot;OPEN&quot;, change: [...]}</code> , con el cambio en monedas y billetes, ordenados de mayor a menor, como el valor de la clave de <code>change</code> .
Recuerda usar <a href='http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514' target='_blank'>Read-Search-Ask</a> si te atascas. Trate de emparejar el programa. Escribe tu propio código.
<table class='table table-striped'><tr><th> Unidad monetaria </th><th> Cantidad </th></tr><tr><td> Centavo </td><td> $ 0.01 (PENNY) </td></tr><tr><td> Níquel </td><td> $ 0.05 (níquel) </td></tr><tr><td> Moneda de diez centavos </td><td> $ 0.1 (DIME) </td></tr><tr><td> Trimestre </td><td> $ 0.25 (TRIMESTRE) </td></tr><tr><td> Dólar </td><td> $ 1 (DÓLAR) </td></tr><tr><td> Cinco dólares </td><td> $ 5 (CINCO) </td></tr><tr><td> Diez dólares </td><td> $ 10 (DIEZ) </td></tr><tr><td> Veinte dólares </td><td> $ 20 (VEINTE) </td></tr><tr><td> Cien dolares </td><td> $ 100 (100) </td></tr></table>
</section>
## Instructions
<section id='instructions'>
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: &#39; <code>checkCashRegister(19.5, 20, [[&quot;PENNY&quot;, 1.01], [&quot;NICKEL&quot;, 2.05], [&quot;DIME&quot;, 3.1], [&quot;QUARTER&quot;, 4.25], [&quot;ONE&quot;, 90], [&quot;FIVE&quot;, 55], [&quot;TEN&quot;, 20], [&quot;TWENTY&quot;, 60], [&quot;ONE HUNDRED&quot;, 100]])</code> debe devolver un objeto. &#39;
testString: 'assert.deepEqual(Object.prototype.toString.call(checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]])), "[object Object]", "<code>checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]])</code> should return an object.");'
- text: &#39; <code>checkCashRegister(19.5, 20, [[&quot;PENNY&quot;, 1.01], [&quot;NICKEL&quot;, 2.05], [&quot;DIME&quot;, 3.1], [&quot;QUARTER&quot;, 4.25], [&quot;ONE&quot;, 90], [&quot;FIVE&quot;, 55], [&quot;TEN&quot;, 20], [&quot;TWENTY&quot;, 60], [&quot;ONE HUNDRED&quot;, 100]])</code> debe devolver <code>{status: &quot;OPEN&quot;, change: [[&quot;QUARTER&quot;, 0.5]]}</code> . &#39;
testString: 'assert.deepEqual(checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]), {status: "OPEN", change: [["QUARTER", 0.5]]}, "<code>checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]])</code> should return <code>{status: "OPEN", change: [["QUARTER", 0.5]]}</code>.");'
- text: &#39; <code>checkCashRegister(3.26, 100, [[&quot;PENNY&quot;, 1.01], [&quot;NICKEL&quot;, 2.05], [&quot;DIME&quot;, 3.1], [&quot;QUARTER&quot;, 4.25], [&quot;ONE&quot;, 90], [&quot;FIVE&quot;, 55], [&quot;TEN&quot;, 20], [&quot;TWENTY&quot;, 60], [&quot;ONE HUNDRED&quot;, 100]])</code> debe devolver <code>{status: &quot;OPEN&quot;, change: [[&quot;TWENTY&quot;, 60], [&quot;TEN&quot;, 20], [&quot;FIVE&quot;, 15], [&quot;ONE&quot;, 1], [&quot;QUARTER&quot;, 0.5], [&quot;DIME&quot;, 0.2], [&quot;PENNY&quot;, 0.04]]}</code> . &#39;
testString: 'assert.deepEqual(checkCashRegister(3.26, 100, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]), {status: "OPEN", change: [["TWENTY", 60], ["TEN", 20], ["FIVE", 15], ["ONE", 1], ["QUARTER", 0.5], ["DIME", 0.2], ["PENNY", 0.04]]}, "<code>checkCashRegister(3.26, 100, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]])</code> should return <code>{status: "OPEN", change: [["TWENTY", 60], ["TEN", 20], ["FIVE", 15], ["ONE", 1], ["QUARTER", 0.5], ["DIME", 0.2], ["PENNY", 0.04]]}</code>.");'
- text: &#39; <code>checkCashRegister(19.5, 20, [[&quot;PENNY&quot;, 0.01], [&quot;NICKEL&quot;, 0], [&quot;DIME&quot;, 0], [&quot;QUARTER&quot;, 0], [&quot;ONE&quot;, 0], [&quot;FIVE&quot;, 0], [&quot;TEN&quot;, 0], [&quot;TWENTY&quot;, 0], [&quot;ONE HUNDRED&quot;, 0]])</code> debe devolver <code>{status: &quot;INSUFFICIENT_FUNDS&quot;, change: []}</code> . &#39;
testString: 'assert.deepEqual(checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]), {status: "INSUFFICIENT_FUNDS", change: []}, "<code>checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]])</code> should return <code>{status: "INSUFFICIENT_FUNDS", change: []}</code>.");'
- text: &#39; <code>checkCashRegister(19.5, 20, [[&quot;PENNY&quot;, 0.01], [&quot;NICKEL&quot;, 0], [&quot;DIME&quot;, 0], [&quot;QUARTER&quot;, 0], [&quot;ONE&quot;, 1], [&quot;FIVE&quot;, 0], [&quot;TEN&quot;, 0], [&quot;TWENTY&quot;, 0], [&quot;ONE HUNDRED&quot;, 0]])</code> debe devolver <code>{status: &quot;INSUFFICIENT_FUNDS&quot;, change: []}</code> . &#39;
testString: 'assert.deepEqual(checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 1], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]), {status: "INSUFFICIENT_FUNDS", change: []}, "<code>checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 1], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]])</code> should return <code>{status: "INSUFFICIENT_FUNDS", change: []}</code>.");'
- text: &#39; <code>checkCashRegister(19.5, 20, [[&quot;PENNY&quot;, 0.5], [&quot;NICKEL&quot;, 0], [&quot;DIME&quot;, 0], [&quot;QUARTER&quot;, 0], [&quot;ONE&quot;, 0], [&quot;FIVE&quot;, 0], [&quot;TEN&quot;, 0], [&quot;TWENTY&quot;, 0], [&quot;ONE HUNDRED&quot;, 0]])</code> debe devolver <code>{status: &quot;CLOSED&quot;, change: [[&quot;PENNY&quot;, 0.5], [&quot;NICKEL&quot;, 0], [&quot;DIME&quot;, 0], [&quot;QUARTER&quot;, 0], [&quot;ONE&quot;, 0], [&quot;FIVE&quot;, 0], [&quot;TEN&quot;, 0], [&quot;TWENTY&quot;, 0], [&quot;ONE HUNDRED&quot;, 0]]}</code> . &#39;
testString: 'assert.deepEqual(checkCashRegister(19.5, 20, [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]), {status: "CLOSED", change: [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]}, "<code>checkCashRegister(19.5, 20, [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]])</code> should return <code>{status: "CLOSED", change: [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]}</code>.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function checkCashRegister(price, cash, cid) {
var change;
// Here is your change, ma'am.
return change;
}
// Example cash-in-drawer array:
// [["PENNY", 1.01],
// ["NICKEL", 2.05],
// ["DIME", 3.1],
// ["QUARTER", 4.25],
// ["ONE", 90],
// ["FIVE", 55],
// ["TEN", 20],
// ["TWENTY", 60],
// ["ONE HUNDRED", 100]]
checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]);
```
</div>
</section>
## Solution
<section id='solution'>
```js
var denom = [
{ name: 'ONE HUNDRED', val: 100},
{ name: 'TWENTY', val: 20},
{ name: 'TEN', val: 10},
{ name: 'FIVE', val: 5},
{ name: 'ONE', val: 1},
{ name: 'QUARTER', val: 0.25},
{ name: 'DIME', val: 0.1},
{ name: 'NICKEL', val: 0.05},
{ name: 'PENNY', val: 0.01}
];
function checkCashRegister(price, cash, cid) {
var output = {status: null, change: []};
var change = cash - price;
var register = cid.reduce(function(acc, curr) {
acc.total += curr[1];
acc[curr[0]] = curr[1];
return acc;
}, {total: 0});
if(register.total === change) {
output.status = 'CLOSED';
output.change = cid;
return output;
}
if(register.total < change) {
output.status = 'INSUFFICIENT_FUNDS';
return output;
}
var change_arr = denom.reduce(function(acc, curr) {
var value = 0;
while(register[curr.name] > 0 && change >= curr.val) {
change -= curr.val;
register[curr.name] -= curr.val;
value += curr.val;
change = Math.round(change * 100) / 100;
}
if(value > 0) {
acc.push([ curr.name, value ]);
}
return acc;
}, []);
if(change_arr.length < 1 || change > 0) {
output.status = 'INSUFFICIENT_FUNDS';
return output;
}
output.status = 'OPEN';
output.change = change_arr;
return output;
}
```
</section>