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 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 and Description
Solution()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

removeDuplicates

public String removeDuplicates(String s,
                               int k)