file = File.open("cyphertext.txt")
contents = file.read
totalCharCount = contents.length
EnglishCharFreq = [
                  ["a", 8.167],
                  ["b", 1.492],
                  ["c", 2.782],
                  ["d", 4.253],
                  ["e", 12.702],
                  ["f", 2.228],
                  ["g", 2.015],
                  ["h", 6.094],
                  ["i", 6.966],
                  ["j", 0.153],
                  ["k", 0.772],
                  ["l", 4.025],
                  ["m", 2.406],
                  ["n", 6.749]
                  ["o", 7.507],
                  ["p", 1.929],
                  ["q", 0.095],
                  ["r", 5.987],
                  ["s", 6.327],
                  ["t", 9.056],
                  ["u", 2.758],
                  ["v", 0.978],
                  ["w", 2.361],
                  ["x", 0.150],
                  ["y", 1.974],
                  ["z", 0.074]
                ]


def char_count(str)
    count = {}
    str.each_char do |char|
        count[char] = 0.0 unless count.include?(char)
        count[char] += 1.0
    end
    count
end

freqVal = char_count(contents).sort

for i in 0..freqVal.length-1
    freqVal[i][1] = (freqVal[i][1]/totalCharCount)*100
end

print "#{freqVal}"