# 文字列 string = 'cccbbbaaaddd' # 正規表現 pattern = 'a.*' # 検索 string.match(pattern) # => #<MatchData "aaaddd"> string.match(pattern).to_s # => "aaaddd" string.match(pattern).to_s[-1] # => "d" string.match(pattern).to_s[0] # => "a" string.match(pattern).p</matchdata>…