/testREcherche

Primary LanguageJavaScript

** countCharacterOccurrences

countCharacterOccurrences Function Refactoring

This document describes ten different versions of the countCharacterOccurrences function, which counts the number of occurrences of a specific character in a string.

  1. For Loop Version: This version uses a traditional for loop to iterate over the string and increment a count variable when the current character matches the target character.

  2. While Loop Version: This version uses a while loop to achieve the same result as the for loop version. It's a more traditional approach and might be more familiar to programmers with a background in languages that don't support for loops.

  3. For-Of Loop Version: This version uses a for-of loop, which is a more modern feature of JavaScript. It's more readable than the for loop and while loop versions, but it might not be supported in older JavaScript environments.

  4. ForEach Method Version: This version uses the Array.prototype.forEach method to iterate over the string. It's a more functional approach and can lead to cleaner code, but it might be slower than the loop versions for large strings.

  5. Filter Method Version: This version uses the Array.prototype.filter method to create a new array that only includes the characters that match the target character. It then returns the length of this new array.

  6. Reduce Method Version: This version uses the Array.prototype.reduce method to count the number of characters that match the target character. It's a more functional approach and can lead to cleaner code, but it might be slower than the loop versions for large strings.

  7. Match Method Version: This version uses the String.prototype.match method with a regular expression to find all occurrences of the target character. It's a more concise approach, but it requires understanding of regular expressions.

  8. Split Method Version: This version uses the String.prototype.split method to split the string into an array of substrings at each occurrence of the target character. It then returns the length of this array minus one.

  9. Recursion Version: This version uses recursion to count the number of characters that match the target character. It's a more academic approach and can lead to cleaner code, but it might cause a stack overflow for large strings.