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Hayden - Edges (C10) - Matrix Covert To Zero #13

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Hayden - Edges (C10) - Matrix Covert To Zero #13

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542452c
implement matrix convert to zero smethod
haydenwalls Oct 29, 2018
eb48b75
fix time complexity
haydenwalls Oct 30, 2018
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19 changes: 18 additions & 1 deletion lib/matrix_convert_to_zero.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -3,5 +3,22 @@
# If any number is found to be 0, the method updates all the numbers in the
# corresponding row as well as the corresponding column to be 0.
def matrix_convert_to_0(matrix)
raise NotImplementedError
matrix.each do |row|
index = 0
row.each do |element|
if element == 0
row.length.times do |i|
row[i] = 0
end
matrix.length.times do |i|
matrix[i][index] = 0
end
end

index += 1
end
end
end

# the time complexity of this solution is O(n * m) where n is the number of elements in each row and m is the number of elements in each column
# the space complexity is O(1) because the only space required in memory by this solution is a handful of iteration variables. All transformations are performed in place.