leetcode14-2.rb

# @param {String[]} strs
# @return {String}
def longest_common_prefix(strs)
    strs = strs.sort
    first = strs[0]
    last = strs[strs.length - 1]
    string = ""

    first.length.times do |index|
        if first[index] == last[index]
            string += first[index]
        else 
            break
        end
    end

    return string
end