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Commit 3cb4b42

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Merge pull request #37 from somekindofwallflower/feature/anagrams
Implement the anagram problem solution, write tests
2 parents ba3079c + 947f70c commit 3cb4b42

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‎07_anagrams/index.js

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// --- Directions
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// Check to see if two provided strings are anagrams of each other.
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// One string is an anagram of another if it uses the same characters
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// in the same quantity. Only consider characters, not spaces
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// or punctuation. Consider capital letters to be the same as lower case
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// --- Examples
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// anagrams('rail safety', 'fairy tales') --> True
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// anagrams('RAIL! SAFETY!', 'fairy tales') --> True
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// anagrams('Hi there', 'Bye there') --> False
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// Solution 1
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// function anagrams(stringA, stringB) {
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// const aCharMap = buildCharMap(stringA);
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// const bCharMap = buildCharMap(stringB);
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//
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// if(Object.keys(aCharMap).length !== Object.keys(bCharMap).length) {
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// return false;
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// }
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// for (let char in aCharMap) {
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// if(aCharMap[char] !== bCharMap[char]) {
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// return false
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// }
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// }
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// return true;
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// }
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//
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// function buildCharMap(str) {
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// const charMap = {};
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// for (let char of str.replace(/[^\w]/g, '').toLowerCase()) {
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// charMap[char] = charMap[char] + 1 || 1;
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// }
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// return charMap;
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// }
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// Solution 2
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function anagrams(stringA, stringB) {
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return cleanStr(stringA) === cleanStr(stringB);
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}
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function cleanStr(str) {
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return str.replace(/[^\w]/g, '')
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.toLowerCase()
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.split("")
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.sort()
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.join("");
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}
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module.exports = anagrams;

‎07_anagrams/test.js

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const anagrams = require('./index.js');
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test('anagrams function exists', () => {
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expect(typeof anagrams).toEqual('function');
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});
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test('"hello" is an anagram of "llohe"', () => {
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expect(anagrams('hello', 'llohe')).toBeTruthy();
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});
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test('"Whoa! Hi!" is an anagram of "Hi! Whoa!"', () => {
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expect(anagrams('Whoa! Hi!', 'Hi! Whoa!')).toBeTruthy();
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});
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test('"One One" is not an anagram of "Two two two"', () => {
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expect(anagrams('One One', 'Two two two')).toBeFalsy();
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});
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test('"One one" is not an anagram of "One one c"', () => {
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expect(anagrams('One one', 'One one c')).toBeFalsy();
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});
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test('"A tree, a life, a bench" is not an anagram of "A tree, a fence, a yard"', () => {
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expect(
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anagrams('A tree, a life, a bench', 'A tree, a fence, a yard')
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).toBeFalsy();
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});

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