#541

Reverse String II

pupil · 495 · lc easy +27 · verified · 53.4% accepted · 2,342 likes · top 44%

Description

Given a string s and an integer k, process the string in non-overlapping blocks of 2k characters from left to right, reversing the first k characters of each block. In the final block: if fewer than k characters remain reverse all of them; if between k and 2k characters remain reverse only the first k and keep the rest unchanged.

Example 1:

Input: s = "abcdefg", k = 2

Output: "bacdfeg"

Example 2:

Input: s = "abcd", k = 2

Output: "bacd"

Code

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class Solution:
    def reverseStr(self, s: str, k: int) -> str:

class Solution:
    def reverseStr(self, s: str, k: int) -> str: