freeCodeCamp/curriculum/challenges/spanish/02-javascript-algorithms-and-data-structures/basic-algorithm-scripting/mutations.spanish.md

id, title, localeTitle, isRequired, challengeType

id	title	localeTitle	isRequired	challengeType
af2170cad53daa0770fabdea	Mutations	Mutaciones	true	5

Description

Devuelva verdadero si la cadena en el primer elemento de la matriz contiene todas las letras de la cadena en el segundo elemento de la matriz. Por ejemplo, ["hello", "Hello"] , debería devolver verdadero porque todas las letras en la segunda cadena están presentes en el primer caso, ignorando el caso. Los argumentos ["hello", "hey"] deben devolver falso porque la cadena "hola" no contiene una "y". Por último, ["Alien", "line"] , debe devolver verdadero porque todas las letras en "line" están presentes en "Alien". Recuerda usar Read-Search-Ask si te atascas. Escribe tu propio código.

Instructions

Tests

tests:
  - text: &#39; <code>mutation([&quot;hello&quot;, &quot;hey&quot;])</code> debe devolver falso.&#39;
    testString: 'assert(mutation(["hello", "hey"]) === false, "<code>mutation(["hello", "hey"])</code> should return false.");'
  - text: &#39; <code>mutation([&quot;hello&quot;, &quot;Hello&quot;])</code> debe devolver verdadero.&#39;
    testString: 'assert(mutation(["hello", "Hello"]) === true, "<code>mutation(["hello", "Hello"])</code> should return true.");'
  - text: &#39; <code>mutation([&quot;zyxwvutsrqponmlkjihgfedcba&quot;, &quot;qrstu&quot;])</code> debe devolver verdadero.&#39;
    testString: 'assert(mutation(["zyxwvutsrqponmlkjihgfedcba", "qrstu"]) === true, "<code>mutation(["zyxwvutsrqponmlkjihgfedcba", "qrstu"])</code> should return true.");'
  - text: &#39;la <code>mutation([&quot;Mary&quot;, &quot;Army&quot;])</code> debería devolver la verdad.&#39;
    testString: 'assert(mutation(["Mary", "Army"]) === true, "<code>mutation(["Mary", "Army"])</code> should return true.");'
  - text: &#39;la <code>mutation([&quot;Mary&quot;, &quot;Aarmy&quot;])</code> debe devolver la verdad.&#39;
    testString: 'assert(mutation(["Mary", "Aarmy"]) === true, "<code>mutation(["Mary", "Aarmy"])</code> should return true.");'
  - text: &#39; <code>mutation([&quot;Alien&quot;, &quot;line&quot;])</code> debe devolver true.&#39;
    testString: 'assert(mutation(["Alien", "line"]) === true, "<code>mutation(["Alien", "line"])</code> should return true.");'
  - text: &#39; <code>mutation([&quot;floor&quot;, &quot;for&quot;])</code> debe devolver verdadero.&#39;
    testString: 'assert(mutation(["floor", "for"]) === true, "<code>mutation(["floor", "for"])</code> should return true.");'
  - text: &#39; <code>mutation([&quot;hello&quot;, &quot;neo&quot;])</code> debe devolver falso.&#39;
    testString: 'assert(mutation(["hello", "neo"]) === false, "<code>mutation(["hello", "neo"])</code> should return false.");'
  - text: &#39; <code>mutation([&quot;voodoo&quot;, &quot;no&quot;])</code> debe devolver falso.&#39;
    testString: 'assert(mutation(["voodoo", "no"]) === false, "<code>mutation(["voodoo", "no"])</code> should return false.");'

Challenge Seed

function mutation(arr) {
  return arr;
}

mutation(["hello", "hey"]);

Solution

function mutation(arr) {
  let hash = Object.create(null);

  arr[0].toLowerCase().split('').forEach(c => hash[c] = true);

  return !arr[1].toLowerCase().split('').filter(c => !hash[c]).length;
}

mutation(["hello", "hey"]);