Copy All: You can copy all the characters present on the notepad (partial copy is not allowed). Paste: You can paste the characters which are copied last time. Given a numbern. You have to get exactlyn'A' on the notepad by performing the minimum number of steps permitted. Output the ...
Motivated by computing duplication patterns in sequences, a new problem called the longest letter-duplicated subsequence (LLDS) is proposed. Given a sequence S of length n, a letter-duplicated subsequence is a subsequence of S in the form of x1d1x2d2…xkdk with xi∈Σ, xj≠xj+1 and ...