题解 | #字符串反转#
字符串反转
https://www.nowcoder.com/practice/e45e078701ab4e4cb49393ae30f1bb04
import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
String str = in.nextLine();
int len = str.length();
StringBuilder reverse = new StringBuilder(len);
for (int i = len-1; i>=0;i--) {
reverse.append(str.charAt(i));
}
System.out.println(reverse);
}
}
