Rearrange Words in a Sentence - Solution & Explanation

This approach involves splitting the sentence into individual words and then using a stable sort method to arrange the words by their length. Languages typically have built-in sort functionalities which can use a custom key to sort based on the length of each word. The first word in the result then needs to be capitalized to maintain the sentence format.

The C solution involves splitting the string into words using strtok, storing them in an array, and sorting them using qsort. The custom comparator sorts by word length. After sorting, convert the first letter of the first word to uppercase and concatenate the words back into the sentence.

This approach uses a custom method to first sort the words by length and then recreate the sentence. The main idea is to use a stable sorting algorithm that will retain the original order of words with the same length, and then to capitalize the first word using string manipulation methods available in each programming language.

Similar to the C solution in Approach 1, but clearly emphasizes separating the word capitalization step into a separate function. The words are extracted and stored in an array, sorted using qsort, and concatenated back with attention to capitalizing the first word.