import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); String s = in.nextLine(); char[] ch = s.toCharArray(); int len = ch.length; //1.整体进行了逆置 reverse(ch, 0, len - 1); int i = 0; //遍历ch数组 while (i < len) { int j = i; while (j < len && ch[j] != ' ') { j++; } if (j < len) { reverse(ch, i, j - 1); i = j + 1; } else { reverse(ch, i, j - 1); i = j; } } String str = new String(ch); System.out.println(str); } public static void reverse(char[] array, int start, int end) { while (start < end) { char tmp = array[start]; array[start] = array[end]; array[end] = tmp; start++; end--; } } }
package com.newcode; import java.util.Scanner; public class Demo2 { public static void main(String[] args) { // TODO Auto-generated method stub String input=null; String out=null; Scanner sc=new Scanner(System.in); input=sc.nextLine(); String [] result=input.split(" "); int i,j; j=result.length-1; for( i=0;i<=(result.length-1)/2;i++) { if(i!=j) { String temp=result[i]; result[i]=result[j]; result[j]=temp; j--; } } out=""; for(i=0;i<result.length;i++) { if(i<result.length-1)out=out+result[i]+" "; else { out=out+result[i]; } } System.out.println(out); } }
import java.util.Scanner; public class Main{ public static void main(String[] args){ Scanner s = new Scanner(System.in); String str = s.nextLine(); String[] str2 = str.split(" "); for(int i = str2.length-1;i>0;i--){ System.out.print(str2[i]+" "); } System.out.print(str2[0]); } }
import java.util.Scanner; public class Main{ public static void main(String[] args) { String[] str = new Scanner(System.in).nextLine().split(" "); for(int i=0;i<str.length;i++){ System.out.print(str[str.length-1-i]+" "); } } }这个在Idea上可以出来,到了这儿怎么不行了呢???
import java.util.Scanner; public class DaoZhi { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String[] ss = sc.nextLine().split(" "); for (int i =ss.length-1 ; i > -1; i--) { System.out.print(ss[i]); if(i!=0) { System.out.print(" "); } } } }
1、思路其实很简单,首先把字符串按空格符分隔成数组,数组按倒序输出,拼接字符串+空格
import java.util.*; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; public class Main { public static void main(String[] args) throws IOException{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String input = null; String result = ""; while((input = br.readLine()) != null){ String[] arr = input.split(" "); for(int i = arr.length-1; i >=0; i--){ result += arr[i]; if(i != 0){ result += " "; } } System.out.println(result); } } }
import java.util.*; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); while (in.hasNext()) { String string = in.nextLine(); String[] strings = string.split("\\s"); for (int i = strings.length - 1; i >= 0; i--) { if (i > 0) System.out.print(strings[i] + " "); else System.out.println(strings[i]); } } } }
import java.util.Scanner; public class Main { public static void main(String args[]) { Scanner scanner = new Scanner(System.in); while (scanner.hasNext()) { String[] strings = scanner.nextLine().split(" "); StringBuffer sb = new StringBuffer(); for (int i = strings.length - 1; i > 0; i--) { sb.append(strings[i]); sb.append(" "); } sb.append(strings[0]); System.out.println(sb.toString()); } } }
import java.util.Scanner;
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); String data = scanner.nextLine(); String[] strs = data.split(" "); for(int i = strs.length - 1; i >= 0; i--) { if(i != 0) { System.out.print(strs[i] + " "); } else { System.out.print(strs[i]); } } scanner.close(); } }
import java.util.*; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); while(sc.hasNext()) { String s =sc.nextLine(); String []str= s.split(" "); int len =str.length; for(int i=0;i<len/2;i++) { swap(str,i,len-1-i); } for(int i=0;i<len-1;i++) { System.out.print(str[i]+" "); } System.out.print(str[len-1]); } } public static void swap(String str[],int i,int j) { String t =str[i]; str[i]=str[j]; str[j]=t; } }
public class Main{ //先对整个字符串翻转,记为s1,然后对s2以空格分割为字符串数组s2, //分别对字符串数组s2中的每个字符串再翻转,即可。 public static void main(String[] args){ Scanner in = new Scanner(System.in); String s = in.nextLine(); String s1 = reverse(s); String[] s2 = s1.split(" "); StringBuilder res = new StringBuilder(); for(int i=0; i<s2.length; ++i){ String s3 = reverse(s2[i]); res.append(s3); res.append(" "); } res.deleteCharAt(res.length()-1); System.out.println(res.toString()); } //翻转字符串函数 public static String reverse(String s){ char [] c = s.toCharArray(); int len = c.length; for(int i=0; i<= (len/2)-1; ++i){ char temp = c[i]; c[i] = c[len-1-i]; c[len-i-1] = temp; } StringBuilder sb = new StringBuilder(); for(int i=0; i<c.length; ++i){ sb.append(c[i]); } return sb.toString(); } }