3794. Reverse String Prefix
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You are given a string s and an integer k.
Reverse the first k characters of s and return the resulting string.
Example 1:
Input: s = "abcd", k = 2
Output: "bacd"
Explanation:
The first k = 2 characters "ab" are reversed to "ba". The final resulting string is "bacd".
Example 2:
Input: s = "xyz", k = 3
Output: "zyx"
Explanation:
The first k = 3 characters "xyz" are reversed to "zyx". The final resulting string is "zyx".
Example 3:
Input: s = "hey", k = 1
Output: "hey"
Explanation:
The first k = 1 character "h" remains unchanged on reversal. The final resulting string is "hey".
Constraints:
1 <= s.length <= 100sconsists of lowercase English letters.1 <= k <= s.length
Hints
Hint 1
Simulate as described