CODEWITHSUNDEEP
rubystring
EggSix
EggSix

Reputation: 988

How do to print two zero's 00 as an integer?

I'm working on some app academy practice questions and I can't seem to print two 00's for my time conversion. Here's what I have so far:

def time_conversion(minutes)
  hours = minutes/60            
  if minutes%60 < 10
    minutes = minutes%60
  elsif minutes%60 > 10
    minutes = minutes%60
  elsif minutes%60 == 0
    minutes = 00
  end        

  return "#{hours}:#{minutes}"
end

time_conversion(360)

Upvotes: 4

Views: 203

Answers (4)

Yu Hao
Yu Hao

Reputation: 122383

You can use sprintf:

sprintf("%02d:%02d", hours, minutes)

or the equivalent String#%

"%02d:%02d" % [hours, minutes]

Upvotes: 6

Cary Swoveland
Cary Swoveland

Reputation: 110675

The method Fixnum#divmod is useful here:

def time_conversion(minutes)
  "%d hours: %02d minutes" % minutes.divmod(60)
end      

time_conversion(360)
  #=> "6 hours: 00 minutes"

Upvotes: 0

Shreyas
Shreyas

Reputation: 1534

A very simple re-structuring of your code could be with one single line in your function def - 

return "#{m/60}:#{m%60 == 0 ? '00' : m%60}"

Sample execution from irb - 

2.1.5 :077 > m=100
 => 100 
2.1.5 :078 > puts "#{m/60}:#{m%60 == 0 ? '00' : m%60}"
1:40
 => nil 
2.1.5 :079 > m=120
 => 120 
2.1.5 :080 > puts "#{m/60}:#{m%60 == 0 ? '00' : m%60}"
2:00
 => nil 
2.1.5 :081 >

Upvotes: 1

Amit Patel
Amit Patel

Reputation: 15985

replace last statement of time_conversion with return "%02d:%02d" % [ hours, minutes ]

Check the document http://ruby-doc.org/core-2.1.5/String.html#method-i-25 for more details

Upvotes: 0

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