Package g2601_2700.s2645_minimum_additions_to_make_valid_string

Class Solution

java.lang.Object
g2601_2700.s2645_minimum_additions_to_make_valid_string.Solution
public class Solution extends java.lang.Object
2645 - Minimum Additions to Make Valid String.

Medium

Given a string word to which you can insert letters “a”, “b” or “c” anywhere and any number of times, return the minimum number of letters that must be inserted so that word becomes valid.

A string is called valid if it can be formed by concatenating the string “abc” several times.

Example 1:

Input: word = “b”

Output: 2

Explanation: Insert the letter “a” right before “b”, and the letter “c” right next to “a” to obtain the valid string “abc”.

Example 2:

Input: word = “aaa”

Output: 6

Explanation: Insert letters “b” and “c” next to each “a” to obtain the valid string “abcabcabc”.

Example 3:

Input: word = “abc”

Output: 0

Explanation: word is already valid. No modifications are needed.

Constraints:

  • 1 <= word.length <= 50
  • word consists of letters “a”, “b” and “c” only.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    addMinimum(java.lang.String word)
     

    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

    • addMinimum

      public int addMinimum(java.lang.String word)