Package g0401_0500.s0424_longest_repeating_character_replacement

Class Solution

java.lang.Object
g0401_0500.s0424_longest_repeating_character_replacement.Solution
public class Solution extends java.lang.Object
424 - Longest Repeating Character Replacement.

Medium

You are given a string s and an integer k. You can choose any character of the string and change it to any other uppercase English character. You can perform this operation at most k times.

Return the length of the longest substring containing the same letter you can get after performing the above operations.

Example 1:

Input: s = “ABAB”, k = 2

Output: 4

Explanation: Replace the two ’A’s with two ’B’s or vice versa.

Example 2:

Input: s = “AABABBA”, k = 1

Output: 4

Explanation: Replace the one ‘A’ in the middle with ‘B’ and form “AABBBBA”. The substring “BBBB” has the longest repeating letters, which is 4.

Constraints:

  • 1 <= s.length <= 105
  • s consists of only uppercase English letters.
  • `0 <= k <= s.length

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    characterReplacement(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

    • characterReplacement

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