def duplicate_count(text)
freq = {}
letters = text.chars
letters.each do |l|
if freq.has_key? l
freq[l] = freq[l] + 1
else
freq[l] = 1
end
end
s = 0
freq.each_value do |v|
if v > 1
s = s + 1
end
end
s
end
puts duplicate_count 'aabc'
Comments
0 B
|👍
/👎
0 B
|👍
/👎