# Submit part 0, as a plain text file. Submit parts 1 - 3 as a Ruby...

###### Question:

Submit part 0, as a plain text file. Submit parts 1 - 3 as a Ruby source file.

Part 0

• The Ruby API

• Information about Ruby’s regular expressions

Part 1

A method that substitutes part of a string

Part 2

• Print the string “Hello, world.”

• For the string “Hello, Ruby,” find the index of the word “Ruby.”

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