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onewland/strstr.rb

Forked from rachelmyers/strstr
Created December 6, 2010 16:27
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strstr.rb
def substring(haystack, needle)
0.upto(haystack.length) do |i|
return i if haystack[i,(needle.length)] == needle
end
return nil
end
puts substring("stupid", "smart")
puts substring("stupid", "stu")
puts substring("stupid", "pid")
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