Every Letter in the Alphabet Used?


In the most concise way possible (also with the least iterations), given any sentence, determine if the sentence contains all the letters of the alphabet. Do so by creating a method called contains_all? that accepts a string as a parameter and returns true or false based upon the result.

sentence_1 = "Sam is the man and has a very big plan to dominate coding"
sentence_2 = "The quick brown fox jumps over the lazy dog"
sentence_3 = "Look over the wall and you will see every 1 persons dog alive"
def contains_all? sentence end
< >