JAVA怎么让一个字符串返过来输出，并且它的下标也是返来输出 用java在一个字符串中找指定字符并且返回这个找到的字符，也...
\u5728java\u4e2d\u5982\u4f55\u628a\u4e00\u4e2a\u5b57\u7b26\u4e32\u8fd4\u5e8f\u8f93\u51fa\uff1fpublic class Test{
public static void main(String[] args){
String str="hello world";
for(int i=str.length()-1;i>=0;i--){
System.out.print(str.charAt(i));
}
}
}
1.String ="555.00";
\u4ece\u4f60\u8fd9\u6bb5\u5b57\u7b26\u4e32\u6765\u8bf4\u53ef\u4ee5\u8fd9\u6837\uff0c\u628a\u8fd9\u4e9b\u8f6c\u6362\u4e3a\u5b57\u7b26\u6570\u7ec4\u3002\u7136\u540e\u5339\u914d\u67e5\u627e\u7b2c\u4e00\u4e2a\u201c>\u201d\u7b26\u53f7\uff0c\u4ed6\u540e\u9762\u7684\u4e00\u6bb5\u5b57\u7b26\u4e32\u76f4\u5230\u9047\u5230\u201c<\u201d\u5b57\u7b26\u4e32\u4e4b\u95f4 \u7684\u5b57\u7b26\u5c31\u662f \u4f60\u60f3\u8981\u7684\u3002\u53d6\u51fa\u540e\u628a\u8fd9\u4e9b\u5b57\u7b26\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u5c31\u53ef\u4ee5\u4e86\u3002\u3002
{
public static void main(String ards[])
{
String str = "abcdefg";
StringBuffer strBuff=new StringBuffer(str);
strBuff.reverse();//调用方法，生成逆序，即反转字符串
String str1 = strBuff.toString();
for(int i=0;i<str1.length();i++){
System.out.println("下标:"+i+",字符为:"+str1.charAt(i));
}
}
}
String str = "abcd";
StringBuffer sb = new StringBuffer(str);
sb.reverse();//把字符串反转
char[] chs= sb.toString().toCharArray();//把字符串变成字符数组
for(int i=0;i<chs.length;i++){
System.out.println("下标:"+i+" 字符为"+chs[i]);
}
String str = "abcd";
for(int i=str.length()-1,j=0;i>=0;i--,j++){
System.out.println("下标:"+j+" 字符为"+str.charAt(i));
}
for(int i=0;i<str.length();i++){
system.out.print("下标:"+i+" 字符为"+str.charAt(str.length()-i-1)) ;
}
绛旓細java涓鐢╝rrays sort锛堬級鏂规硶灏哸bcdefg鍊掑簭锛屽彲浠ュ厛璇曠敤java鐨comparable鎺ュ彛鍏堣繘琛屾瘮杈冿紝鐒跺悗鎺掑簭锛屽疄渚嬪涓嬶細package test; import java.util.Arrays;import java.util.Comparator; public class Arraysort { public static void main(String[] args) { String s = "a,b,c,d,e,f,g"; St...
绛旓細涓涓嬩唬鐮佷粎渚涘弬鑰 public class Main {public static void main(String[] args) {String s = "aaBvdEFdsd";StringBuffer ss = convertString(s);System.out.println("澶у皬鍐欒浆鎹㈠悗鏄:" + convertString(s));System.out.println("鍊掑簭杈撳嚭鍚庢槸:" + ss.reverse());}public static StringBuffer ...
绛旓細import java.io.IOException;import java.io.InputStreamReader;public class Test { public static void main(String[] args){ BufferedReader br = null;String s = "";String s1 = "";try{ br = new BufferedReader(new InputStreamReader(System.in));System.out.println("璇疯緭鍏瀛楃骞朵互鍥炶溅...
绛旓細String temp=null;temp = s1;s1=s2;s2=temp;
绛旓細package p1;public class J_ReadTxt{private static String reverse ( String input ){if (input.isEmpty ()){return "";}String end = input.substring (input.length () - 1, input.length ());char[] cs = end.toCharArray ();if (cs[0] <= 'Z' && cs[0] >= 'A'){end = ...
绛旓細package tourismsystem;import java.util.Scanner;public class TestP { / param args / public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc = new Scanner(System.in);String line = sc.nextLine();for(int i = line.length() - 1; i >= 0; i-...
绛旓細String src = "abc";String value = new StringBuffer(src).reverse().toString();
绛旓細StringBuffer绫绘湰韬鏈変竴涓瀹炵幇瀛楃涓閫嗗簭鐨勬柟娉昿ublic StringBuffer reverse();姝ゆ柟娉曞崄鍒嗘柟渚跨畝鍗曪紝鏌ョ湅API鍗冲彲銆備笅闈㈡垜鑷繁鍐欎竴涓柟娉曟潵瀹炵幇瀛楃涓茬殑閫嗗簭杈撳嚭 浠ｇ爜鍙婅繍琛岀粨鏋滃涓 鏂囧瓧鐗堜唬鐮佸涓嬶細import java.util.Scanner;public class Test{ public static void main(String []args) { Scanner in=new...
绛旓細import java.awt.event.ActionEvent;import java.awt.*;import java.awt.event.ActionListener;import java.util.ArrayList;import javax.swing.*;import javax.swing.JButton;import javax.swing.JPanel;import javax.swing.JTextField;public class test { / param args / public static void main(...
绛旓細java瀹炵幇瀛楃涓查嗗簭杈撳嚭鍗曡瘝鏂瑰紡濡備笅锛氬疄鐜版濊矾锛氬厛灏嗗瓧绗︿覆鍙樹负瀛楃涓叉暟缁勶紝鐒跺悗閫嗗簭璧嬪肩粰鍙涓涓瓧绗︿覆鏁扮粍锛屾渶鍚庡啀鍒╃敤StringBuffer杞彉涓哄瓧绗︿覆杈撳嚭锛屾柟娉曞涓嬶細public class Demo{public static void main(String[] args){String str = "I am a student";String str1 = wordsReverse(str);//杈撳嚭...
