反转字符串

/**
 * This implementation utilizes Java Streams to reverse an array of characters.
 * However, since streams are not directly suitable for in-place modification,
 * we first convert the character array to a List, reverse the List, and then convert it back.
 * Note: This method uses extra space due to conversion between List and array.
 */
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
 
public class Solution {
    public void reverseString(char[] s) {
        // Convert array to list
        List<Character> list = Arrays.asList(toCharacterArray(s));
        // Reverse the list
        Collections.reverse(list);
        // Convert list back to array
        for (int i = 0; i < list.size(); i++) {
            s[i] = list.get(i);
        }
    }
 
    private Character[] toCharacterArray(char[] s) {
        Character[] charObjectArray = new Character[s.length];
        for (int i = 0; i < s.length; i++) {
            charObjectArray[i] = s[i];
        }
        return charObjectArray;
    }
}