How to check a given string is an anagram of another string in JavaScript ?
Anagram: An anagram is a word or sentence, which usually contains all the original letters exactly once, in order to arrange the letters of a different term or phrase. Some of the examples are given below:
1. evil = vile
Hey geek! The constant emerging technologies in the world of web development always keeps the excitement for this subject through the roof. But before you tackle the big projects, we suggest you start by learning the basics. Kickstart your web development journey by learning JS concepts with our JavaScript Course. Now at it's lowest price ever!
2. a gentleman = elegant man
3. eleven plus two = twelve plus one
Example 1: Using in-built functions.
HTML
<script> function checkAnagram(a, b) { // Not of same length, can't be Anagram if (a.length !== b.length) { return false; } // Inbuilt functions to rearrange the string var str1 = a.split('').sort().join(''); var str2 = b.split('').sort().join(''); var result = (str1 === str2); return result; } // Checking the output document.write(checkAnagram('abc', 'cba')); </script> |
Output:
true
Example 2: Without using inbuilt functions.
HTML
<script> function checkAnagram(a, b) { var array = {}; if (a === b) { return true; } if (a.length !== b.length) { return false; } for (let i = 0; i < a.length; i++) { let res = a.charCodeAt(i) - 97; array[res] = (array[res] || 0) + 1; } for (let j = 0; j < b.length; j++) { let res = b.charCodeAt(j) - 97; if (!array[res]) { return false; } array[res]--; } return true; } document.write(checkAnagram('abc', 'cba')); </script> |
Output:
true
