Motivated by computing duplication patterns in sequences, a new problem called the longest letter-duplicated subsequence (LLDS) is proposed. Given a sequen
In step 1, we use Copy All operation. In step 2, we use Paste operation to get 'AA'. In step 3, we use Paste operation to get 'AAA'. 这题的意思就是一开始记事本上只有1个A,要得到n个A的话至少需要几个步骤,每一步要么copy all,就是复制所有,不允许部分复制。要么paste,即将上一次复制的...