Package g1201_1300.s1209_remove_all_adjacent_duplicates_in_string_ii

Class Solution

java.lang.Object
g1201_1300.s1209_remove_all_adjacent_duplicates_in_string_ii.Solution
public class Solution extends java.lang.Object
1209 - Remove All Adjacent Duplicates in String II.

Medium

You are given a string s and an integer k, a k duplicate removal consists of choosing k adjacent and equal letters from s and removing them, causing the left and the right side of the deleted substring to concatenate together.

We repeatedly make k duplicate removals on s until we no longer can.

Return the final string after all such duplicate removals have been made. It is guaranteed that the answer is unique.

Example 1:

Input: s = “abcd”, k = 2

Output: “abcd”

Explanation: There’s nothing to delete.

Example 2:

Input: s = “deeedbbcccbdaa”, k = 3

Output: “aa”

Explanation:

First delete “eee” and “ccc”, get “ddbbbdaa”

Then delete “bbb”, get “dddaa”

Finally delete “ddd”, get “aa”

Example 3:

Input: s = “pbbcggttciiippooaais”, k = 2

Output: “ps”

Constraints:

  • 1 <= s.length <= 105
  • 2 <= k <= 104
  • s only contains lower case English letters.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String
    removeDuplicates(java.lang.String s, int k)
     

    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

    • removeDuplicates

      public java.lang.String removeDuplicates(java.lang.String s, int k)