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Jordany Rosas
Courses Plus Student 4,557 PointsNeed help getting my method to work
I'm trying to create a method that takes in a string, and returns that string, but it's previous letters. For example, "afe" would return "zed"
def decrypt(string)
string_index = 0
alphabet = "abcdefghijklmnopqrstuvwxyz"
alphabet_index = 0
new_string = ""
while alphabet_index < string.length
if string[string_index] == " "
puts string[string_index] = " "
else
if string[string_index] == alphabet[alphabet_index]
new_string = new_string + alphabet[alphabet_index - 1]
end
string_index += 1
end
alphabet_index += 1
end
puts new_string
end
decrypt("aje")
1 Answer
Jay McGavren
Treehouse TeacherThis is a little tricky to debug. Part of the problem is telling the difference between alphabet_index and string_index.
A more idiomatic way to do this would be to create an array of letters and use the each method to loop over them. That way you don't have to mess with incrementing or checking an index. Or in this case, since you're using a String, you can use the each_char method to get the same effect. Here's a snippet:
"aje".each_char do |letter|
puts letter
end
Outputs:
a
j
e
See if that gets you unstuck.
Jason Seifer covers each in Stage 2 of our Ruby Loops course.