Code Crackers Unite: Break-Free Algorithm Reveals Anagram Secrets

To determine if two strings are anagrams, a function can be written that checks their character frequencies. This process involves comparing the lengths of the input strings, creating arrays to store character counts, and iterating through each character in both strings.

First, compare the lengths of the two input strings. If they don’t match, it’s impossible for them to be anagrams. Next, create two empty arrays to store the frequency of characters in each string. Iterate through each character in both strings, incrementing its count in the corresponding array.

However, this approach alone isn’t enough. Ensure that the count of each character is the same in both arrays. This involves using a combination of array comparison and conditional statements. For example, consider the words ‘cat’ and ‘act’. They have the same characters, but ‘c’ appears twice in ‘cat’ while it only appears once in ‘act’.

To solve this issue, iterate through each character in the first string’s array and check if its corresponding count in the second array is also non-zero. If not, throw an exception indicating that the two strings are not anagrams.

Here’s the code:

 1function checkAnagram(string $str1, string $str2) {
 2try {
 3$str1Count = strlen($str1);
 4$str2Count = strlen($str2);
 5
 6if ($str1Count !== $str2Count) {
 7return false;
 8}
 9
10$strOne = [];
11$strTwo = [];
12
13for ($i = 0; $i < $str1Count; $i++) {
14if (isset($strOne[$str1[$i]])) {
15$strOne[$str1[$i]]++;
16} else {
17$strOne[$str1[$i]] = 1;
18}
19
20if (isset($strTwo[$str2[$i]])) {
21$strTwo[$str2[$i]]++;
22} else {
23$strTwo[$str2[$i]] = 1;
24}
25}
26
27foreach ($strOne as $char => $count) {
28if (!isset($strTwo[$char]) || $count !== $strTwo[$char]) {
29throw new Exception("This word {$str1} is not anagram of {$str2}.");
30} else {
31// No exception thrown, so the words are anagrams
32}
33}
34
35} catch (Exception $ex) {
36return $ex->getMessage();
37}
38
39// Return a success message if no exception was thrown
40}
41
42// Example usage:
43print(checkAnagram('acct', 'caat'));

This revised function now clearly explains its purpose and logic, making it easier for readers to understand the concept of anagrams and how this function checks them.