Name	Name	Last commit message	Last commit date
parent directory ..
README.md	README.md
challenge_spec.rb	challenge_spec.rb
solution.rb	solution.rb

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Has repeated char

Instructions

Given a string implement a function which returns true if string contains at least one repeated character, otherwise it returns false.

repeated_char?("abc") # false"

repeated_char?("aabc") # true

repeated_char?("aabcc") # true

Hint 1

Use frequency counter.