TASK DEFINITION: In this task, you need to reverse all words of a given length in the sentence. The number of letters in a word determine its length. For example, the length of the word "apple" is 5.
PROBLEM: Sentence: 'an openair tour bus driving in a city'. Reverse all words of length '7' in the given sentence.

SOLUTION: an rianepo tour bus gnivird in a city

PROBLEM: Sentence: 'a dog jumping high in the air catching a frisbee in its mouth'. Reverse all words of length '8' in the given sentence.

SOLUTION: a dog jumping high in the air gnihctac a frisbee in its mouth

PROBLEM: Sentence: 'a woman holds onto her hardsided suitcase a hallway'. Reverse all words of length '7' in the given sentence.

SOLUTION:
a woman holds onto her hardsided suitcase a yawllah