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How can I convert an entire input string to an integer in Ruby?

I want to give Ruby integer input like this:

12 343 12312 12312 123123 231
12 343 12312 12312 123123 243
12 343 12312 12312 123123 2123

All of this should be taken as a number so that I can sort them all, and if there are any duplicate numbers I want to print them. The entire string must be treated as an integer for comparison with other strings. I cannot accept input in one integer, for each of these lines it gives me 12. How can I do this?

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3 answers


If you want it all to be as one number, just use:

input.gsub(/\s/,'').to_i


If you want int array then use

input.split.map{|i| i.to_i}
+6


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This will keep taking input lines, removing all spaces, converting them to a number, and adding them to the array:



numbers = []
STDIN.each_line do |line|
  numbers << line.gsub(/\s+/, '').to_i
end
+1


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The following snippet will display each number separately and print any duplicates. To check each line instead of individual numbers, uncomment the extra line.

str = <<STRING
12 343 12312 12312 123123 231
12 343 12312 12312 123123 243
12 343 12312 12312 123123 2123
STRING

nums = str.split(/\s/m).collect {|i| i.to_i}
#nums = str.gsub(/ /,'').collect {|i| i.to_i}

uniq_nums = nums.uniq.sort

uniq_nums.each do |uniq|
  puts uniq if nums.find_all {|num| uniq == num}.length > 1
end

Return:

12
343
12312
123123
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