TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a surfer is in the middle of an ocean wave'. Find frequency of the letter 'i'

SOLUTION: 3

PROBLEM: Sentence: 'the skateboarder is jumping over a huge statue of a shoe'. Find frequency of the letter 'i'

SOLUTION: 2

PROBLEM: Sentence: 'a young man posing for a picture alone in a field'. Find frequency of the letter 'l'

SOLUTION:
2