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Completed Test #42

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41 changes: 41 additions & 0 deletions Terminal Output
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Original file line number Diff line number Diff line change
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Last login: Sun Aug 19 15:48:20 on ttys003
Sabines-MacBook-Pro:~ ada$ ls
Applications Music git-sandbox
Desktop Pictures hello.rb
Documents Public pryme.rb
Downloads ada tdd-exercise
Library clock
Movies git-pull-activity
Sabines-MacBook-Pro:~ ada$ cd Documents
Sabines-MacBook-Pro:Documents ada$ ls
Ruby_wk.1 Ruby_wk.2 Ruby_wk.3 friendship_note jump-start-live
Sabines-MacBook-Pro:Documents ada$ cd CS_fundamentals_wk.3
-bash: cd: CS_fundamentals_wk.3: No such file or directory
Sabines-MacBook-Pro:Documents ada$ mkdir CS_fundamentals_wk.3
Sabines-MacBook-Pro:Documents ada$ ls
CS_fundamentals_wk.3 Ruby_wk.2 friendship_note
Ruby_wk.1 Ruby_wk.3 jump-start-live
Sabines-MacBook-Pro:Documents ada$ cd CS_fundamentals_wk.3/
Sabines-MacBook-Pro:CS_fundamentals_wk.3 ada$ git clone https://github.com/Sabineth17/array_equals.git
Cloning into 'array_equals'...
remote: Counting objects: 15, done.
remote: Total 15 (delta 0), reused 0 (delta 0), pack-reused 15
Unpacking objects: 100% (15/15), done.
Sabines-MacBook-Pro:CS_fundamentals_wk.3 ada$ atom .
Sabines-MacBook-Pro:CS_fundamentals_wk.3 ada$ cd CS_fundamentals_wk.3
-bash: cd: CS_fundamentals_wk.3: No such file or directory
Sabines-MacBook-Pro:CS_fundamentals_wk.3 ada$ ls
array_equals
Sabines-MacBook-Pro:CS_fundamentals_wk.3 ada$ git clone https://github.com/Sabineth17/BinaryAndDecimal.git
Cloning into 'BinaryAndDecimal'...
remote: Counting objects: 42, done.
remote: Total 42 (delta 0), reused 0 (delta 0), pack-reused 42
Unpacking objects: 100% (42/42), done.
Sabines-MacBook-Pro:CS_fundamentals_wk.3 ada$ atom .
Sabines-MacBook-Pro:CS_fundamentals_wk.3 ada$ ls
BinaryAndDecimal array_equals
Sabines-MacBook-Pro:CS_fundamentals_wk.3 ada$ cd BinaryAndDecimal/
Sabines-MacBook-Pro:BinaryAndDecimal ada$ ls
README.md lib rakefile specs
Sabines-MacBook-Pro:BinaryAndDecimal ada$ atom .
Sabines-MacBook-Pro:BinaryAndDecimal ada$
19 changes: 18 additions & 1 deletion lib/binary_to_decimal.rb
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Expand Up @@ -4,6 +4,23 @@
# The least significant bit is at index 7.
# Calculate and return the decimal value for this binary number using
# the algorithm you devised in class.



# def binary_to_decimal(binary_array)
# binary_array[0] = "" * (2**7)
# binary_array[7] = "" * (2**0)
# # raise NotImplementedError
# end
#
# binary_array = Array.new(8) { rand(0..1) }

def binary_to_decimal(binary_array)
raise NotImplementedError
sum = 0
8.times do |index|
if binary_array[index] == 1
sum += (2 ** (7 - index))
end
end
return sum
end