條件?Test=“abcdefghijklmnopqrstuvwxyz.”問題?Test.substring(0,4)?Test.substring(10,12)?Test.substring(12,10)?Test.substring(6,7)? Test.substring(0,26) 條件?Test=“abcdefghijklmnopqrstuvwxyz.”問題?Test.charAt(0)?Test.charAt(12)?Test.charAt(25)?Test.charAt(27)?Test.substring(6,6) 答案如何寫出來(lái)