Happy numbers: Difference between revisions

→‎{{header|Ruby}}: Use more modern syntax
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(→‎{{header|Ruby}}: Use more modern syntax)
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@seen_numbers << n
digit_squared_sum = n.to_sdigits.each_char.inject(0) sum{ |sum, cn| sum + c.to_in**2 } # In Rails: n.to_s.each_char.sum { c.to_i**2 }
 
if happy?(digit_squared_sum)
1,149

edits