Package g0801_0900.s0820_short_encoding_of_words

Class Solution

java.lang.Object
g0801_0900.s0820_short_encoding_of_words.Solution
public class Solution extends java.lang.Object
820 - Short Encoding of Words.

Medium

A valid encoding of an array of words is any reference string s and array of indices indices such that:

  • words.length == indices.length
  • The reference string s ends with the '#' character.
  • For each index indices[i], the substring of s starting from indices[i] and up to (but not including) the next '#' character is equal to words[i].

Given an array of words, return the length of the shortest reference string s possible of any valid encoding of words.

Example 1:

Input: words = [“time”, “me”, “bell”]

Output: 10

Explanation: A valid encoding would be s = "time#bell#" and indices = [0, 2, 5].

words[0] = “time”, the substring of s starting from indices[0] = 0 to the next ‘#’ is underlined in “time#bell#”

words[1] = “me”, the substring of s starting from indices[1] = 2 to the next ‘#’ is underlined in “time#bell#”

words[2] = “bell”, the substring of s starting from indices[2] = 5 to the next ‘#’ is underlined in “time#bell#”

Example 2:

Input: words = [“t”]

Output: 2

Explanation: A valid encoding would be s = “t#” and indices = [0].

Constraints:

  • 1 <= words.length <= 2000
  • 1 <= words[i].length <= 7
  • words[i] consists of only lowercase letters.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    minimumLengthEncoding(java.lang.String[] words)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • minimumLengthEncoding

      public int minimumLengthEncoding(java.lang.String[] words)