検索プログラム、検索方法、検索装置、記憶プログラム、記憶方法及び記憶装置

摘要

A method includes: storing, by a processor, in a storage region represented by first character information and identification information of a first file, presence or absence information that represents whether or not the first file includes the character information or whether or not a second file that is different from the first file includes second character information, wherein the storage region stores information that represents whether or not the second file includes the second character information.