0820.short-encoding-of-words

820. Short Encoding of Words

题目

Given a list of words, we may encode it by writing a reference string S and a list of indexes A.

For example, if the list of words is ["time", "me", "bell"], we can write it as S = "time#bell#"and indexes = [0, 2, 5].

Then for each index, we will recover the word by reading from the reference string from that index until we reach a "#" character.

What is the length of the shortest reference string S possible that encodes the given words?

Example:

Input: words = ["time", "me", "bell"]
Output: 10
Explanation: S = "time#bell#" and indexes = [0, 2, 5].

Note:

1. 1 <= words.length<= 2000.
2. 1 <=words[i].length<= 7.
3. Each wordhas onlylowercase letters.

解题思路

见程序注释