發送短信 : (k, e)-anonymous for ordinal data

  _  _    _    _    _____       ___      _  _   
 | \| || | || | || |  __ \\    / _ \\   | \| || 
 |  ' || | || | || | |  \ ||  | / \ ||  |  ' || 
 | .  || | \\_/ || | |__/ ||  | \_/ ||  | .  || 
 |_|\_||  \____//  |_____//    \___//   |_|\_|| 
 `-` -`    `---`    -----`     `---`    `-` -`