接受一个只包含小写字母的字符串,然后输出该字符串反转后的字符串。(字符串长度不超过1000)
import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); // 注意 hasNext 和 hasNextLine 的区别 StringBuilder sb = new StringBuilder(in.nextLine()); System.out.println(sb.reverse()); } }
import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner sc=new Scanner(System.in); String s = sc.nextLine(); StringBuilder sb=new StringBuilder(s); System.out.println(sb.reverse().toString()); } }
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); System.out.println(new StringBuffer(in.nextLine()).reverse().toString()); } }
import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); char[] arrays = in.next().toCharArray(); int left = 0; int right = arrays.length - 1; while(left < right) { char temp = arrays[left]; arrays[left] = arrays[right]; arrays[right] = temp; left++; right--; } System.out.println(arrays); } }
public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); String str = in.nextLine(); StringBuilder sb = new StringBuilder(str); System.out.println(sb.reverse()); } }
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); while (sc.hasNextLine()) { String str = sc.nextLine().toLowerCase(); String string = str.replaceAll("[^a-z]*", ""); for (int i = string.length() - 1; i >= 0; i--) { System.out.print(string.charAt(i)); } System.out.println(); } sc.close(); } }