TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a boy swinging a bat while playing baseball'. Find frequency of the letter 'h'

SOLUTION: 1

PROBLEM: Sentence: 'a black computer with a screen reading "press any key to begin."'. Find frequency of the letter 'a'

SOLUTION: 5

PROBLEM: Sentence: 'a group of school children standing in the snow next to trees'. Find frequency of the letter 'h'

SOLUTION:
3