Javascript Coding Exercise – Anagrams

Check to see if two provided strings are anagrams of each other. One string is an anagram of another if it uses the same characters in the same quantity.

Examples:

anagrams('rail safety', 'fairy tales') === true
anagrams('RAIL! SAFETY!', 'fairy tales') === true
anagrams('Hi there', 'Bye there') === false

To check if two strings are anagrams of each other, you can break down the problem into the following steps:

1. Remove spaces and punctuation from the strings.
2. Convert the strings to lowercase to handle case insensitivity.
3. Compare the frequency of characters in both strings.

Here’s a possible solution:

function anagrams(stringA, stringB) {
  // Helper function to clean and sort string
  const cleanString = (str) => {
    return str.replace(/[^\w]/g, '').toLowerCase().split('').sort().join('');
  };

  // Compare cleaned and sorted strings
  return cleanString(stringA) === cleanString(stringB);
}

// Test cases
console.log(anagrams('rail safety', 'fairy tales'));  // true
console.log(anagrams('RAIL! SAFETY!', 'fairy tales'));  // true
console.log(anagrams('Hi there', 'Bye there'));  // false

Explanation:

The cleanString function: