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---
id: a56138aff60341a09ed6c480
title: Inventory Update
challengeType: 5
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videoUrl: ''
localeTitle: Actualización de inventario
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---
## Description
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< section id = "description" > Compare y actualice el inventario almacenado en una matriz 2D con una segunda matriz 2D de una entrega nueva. Actualice las cantidades de artículos de inventario existentes actuales (en < code > arr1< / code > ). Si no se puede encontrar un artículo, agregue el nuevo artículo y la cantidad en la matriz de inventario. La matriz de inventario devuelta debe estar ordenada alfabéticamente por artículo. 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. < / section >
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## Instructions
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< section id = "instructions" >
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< / section >
## Tests
< section id = 'tests' >
```yml
tests:
- text: La función < code > updateInventory</ code > debería devolver una matriz.
testString: 'assert.isArray(updateInventory([[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]], [[2, "Hair Pin"], [3, "Half-Eaten Apple"], [67, "Bowling Ball"], [7, "Toothpaste"]]), "The function < code > updateInventory< / code > should return an array.");'
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- text: '< code > updateInventory([[21, " Bowling Ball" ], [2, " Dirty Sock" ], [1, " Hair Pin" ], [5, " Microphone" ]], [[2, " Hair Pin" ], [3, " Half-Eaten Apple" ], [67, " Bowling Ball" ], [7, " Toothpaste" ]])</ code > debe devolver una matriz con una longitud de 6.'
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testString: 'assert.equal(updateInventory([[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]], [[2, "Hair Pin"], [3, "Half-Eaten Apple"], [67, "Bowling Ball"], [7, "Toothpaste"]]).length, 6, "< code > updateInventory([[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]], [[2, "Hair Pin"], [3, "Half-Eaten Apple"], [67, "Bowling Ball"], [7, "Toothpaste"]])< / code > should return an array with a length of 6.");'
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- text: '< code > updateInventory([[21, " Bowling Ball" ], [2, " Dirty Sock" ], [1, " Hair Pin" ], [5, " Microphone" ]], [[2, " Hair Pin" ], [3, " Half-Eaten Apple" ], [67, " Bowling Ball" ], [7, " Toothpaste" ]])</ code > debe devolver < code > [[88, " Bowling Ball" ], [2, " Dirty Sock" ], [3, " Hair Pin" ], [3, " Half-Eaten Apple" ], [5, " Microphone" ], [7, " Toothpaste" ]]</ code > .'
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testString: 'assert.deepEqual(updateInventory([[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]], [[2, "Hair Pin"], [3, "Half-Eaten Apple"], [67, "Bowling Ball"], [7, "Toothpaste"]]), [[88, "Bowling Ball"], [2, "Dirty Sock"], [3, "Hair Pin"], [3, "Half-Eaten Apple"], [5, "Microphone"], [7, "Toothpaste"]], "< code > updateInventory([[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]], [[2, "Hair Pin"], [3, "Half-Eaten Apple"], [67, "Bowling Ball"], [7, "Toothpaste"]])< / code > should return < code > [[88, "Bowling Ball"], [2, "Dirty Sock"], [3, "Hair Pin"], [3, "Half-Eaten Apple"], [5, "Microphone"], [7, "Toothpaste"]]< / code > .");'
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- text: '< code > updateInventory([[21, " Bowling Ball" ], [2, " Dirty Sock" ], [1, " Hair Pin" ], [5, " Microphone" ]], [])</ code > debe devolver < code > [[21, " Bowling Ball" ], [2, " Dirty Sock" ], [1, " Hair Pin" ], [5, " Microphone" ]]</ code > .'
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testString: 'assert.deepEqual(updateInventory([[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]], []), [[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]], "< code > updateInventory([[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]], [])< / code > should return < code > [[21, "Bowling Ball"], [2, "Dirty Sock"], [1, "Hair Pin"], [5, "Microphone"]]< / code > .");'
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- text: '< code > updateInventory([], [[2, " Hair Pin" ], [3, " Half-Eaten Apple" ], [67, " Bowling Ball" ], [7, " Toothpaste" ]])</ code > debe devolver < code > [[67, " Bowling Ball" ], [2, " Hair Pin" ], [3, " Half-Eaten Apple" ], [7, " Toothpaste" ]]</ code > .'
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testString: 'assert.deepEqual(updateInventory([], [[2, "Hair Pin"], [3, "Half-Eaten Apple"], [67, "Bowling Ball"], [7, "Toothpaste"]]), [[67, "Bowling Ball"], [2, "Hair Pin"], [3, "Half-Eaten Apple"], [7, "Toothpaste"]], "< code > updateInventory([], [[2, "Hair Pin"], [3, "Half-Eaten Apple"], [67, "Bowling Ball"], [7, "Toothpaste"]])< / code > should return < code > [[67, "Bowling Ball"], [2, "Hair Pin"], [3, "Half-Eaten Apple"], [7, "Toothpaste"]]< / code > .");'
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- text: '< code > updateInventory([[0, " Bowling Ball" ], [0, " Dirty Sock" ], [0, " Hair Pin" ], [0, " Microphone" ]], [[1, " Hair Pin" ], [1, " Half-Eaten Apple" ], [1, " Bowling Ball" ], [1, " Toothpaste" ]])</ code > debe devolver < code > [[1, " Bowling Ball" ], [0, " Dirty Sock" ], [1, " Hair Pin" ], [1, " Half-Eaten Apple" ], [0, " Microphone" ], [1, " Toothpaste" ]]</ code > .'
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testString: 'assert.deepEqual(updateInventory([[0, "Bowling Ball"], [0, "Dirty Sock"], [0, "Hair Pin"], [0, "Microphone"]], [[1, "Hair Pin"], [1, "Half-Eaten Apple"], [1, "Bowling Ball"], [1, "Toothpaste"]]), [[1, "Bowling Ball"], [0, "Dirty Sock"], [1, "Hair Pin"], [1, "Half-Eaten Apple"], [0, "Microphone"], [1, "Toothpaste"]], "< code > updateInventory([[0, "Bowling Ball"], [0, "Dirty Sock"], [0, "Hair Pin"], [0, "Microphone"]], [[1, "Hair Pin"], [1, "Half-Eaten Apple"], [1, "Bowling Ball"], [1, "Toothpaste"]])< / code > should return < code > [[1, "Bowling Ball"], [0, "Dirty Sock"], [1, "Hair Pin"], [1, "Half-Eaten Apple"], [0, "Microphone"], [1, "Toothpaste"]]< / code > .");'
```
< / section >
## Challenge Seed
< section id = 'challengeSeed' >
< div id = 'js-seed' >
```js
function updateInventory(arr1, arr2) {
// All inventory must be accounted for or you're fired!
return arr1;
}
// Example inventory lists
var curInv = [
[21, "Bowling Ball"],
[2, "Dirty Sock"],
[1, "Hair Pin"],
[5, "Microphone"]
];
var newInv = [
[2, "Hair Pin"],
[3, "Half-Eaten Apple"],
[67, "Bowling Ball"],
[7, "Toothpaste"]
];
updateInventory(curInv, newInv);
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```
< / div >
< / section >
## Solution
< section id = 'solution' >
```js
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// solution required
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```
< / section >