题解 | #字符串反转#

import java.util.*; public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); while(sc.hasNext()) { String str = sc.nextLine(); char[] ch = str.toCharArray(); int low = 0; int high= ch.length - 1; while(low < high) { exchange(ch, low,high); low++; high--; } for(char x: ch){ System.out.print(x); } } } public static void exchange(char[] ch, int low, int high) { char tmep = ch[low]; ch[low] = ch[high]; ch[high] = tmep; } }