}if(s2.isEmpty()) {// 直接返回s1参数returnnewString(s1); }// start "mixing" in length and coder or arguments, order is not// importantlongindexCoder=mix(initialCoder(), s1); indexCoder = mix(indexCoder, s2);byte[] buf = newArray(indexCoder);// prepend each argument in reverse o...
importjava.util.Scanner;importjava.lang.StringBuilder;publicclassStringReverse{publicstaticvoidmain(String[]args){// 输入字符串Scannerscanner=newScanner(System.in);System.out.println("请输入一个字符串:");StringinputString=scanner.nextLine();// 字符串反转StringBuilderreversedString=newStringBuilder(inputStr...
1、int indexOf(String str) :返回第一次出现的指定子字符串在此字符串中的索引。 2、int indexOf(String str, int startIndex):从指定的索引处开始,返回第一次出现的指定子字符串在此字符串中的索引。 3、int lastIndexOf(String str) :返回在此字符串中最右边出现的指定子字符串的索引。 4、int lastIn...
int[] arr = {1,2,3,4,5,6}; Strings=arrayToString(arr);//普通拼接 System.out.println("s:"+s);//s:[1, 2, 3, 4, 5, 6] Stringsb8=arrayToString2(arr);//StringBuilder拼接 System.out.println("sb8:"+sb8);//sb8:[1,2,3,4,5,6] } publicstaticStringarrayToString(int[] arr...
1. Java Program to Reverse the Characters of a String We canreverse a string by charactereasily, using aStringBuilder.reverse()method. StringblogName="HowToDoInJava.com";Stringreverse=newStringBuilder(string).reverse();System.out.println("Original String -> "+blogName);System.out.println("Rever...
publicstaticStringreverseCharArray(String s){char[]array=s.toCharArray();StringBuffer reverse=newStringBuffer();for(int i=array.length-1;i>=0;i--){reverse.append(array[i]);}returnreverse.toString();} 方法三、通过String类的charAt()的方法来获取字符串中的每一个字符,然后将其拼接为一个新的字...
1. public static void main(String[] args) {2. //常量字符串3. String s1 = "Hello World";4.5. //直接newString对象6. String s2 = new String("Hello World");7.8. //使用字符数组进行构造9. char [] array = {'H','e','l','l','o','W','o','r','l','d'};10. String s3...
import java.util.Scanner; public class ReverseString { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print("Enter a string: "); String str = scanner.nextLine(); // 使用StringBuilder类反转字符串 StringBuilder builder = new StringBuilder(str);...
Reverse Sorted : [Dean, Charles, Brian, Amanda, Alex] 2. Arrays.sort() – Java 7 Arrays.sort()provides similar functionality asStream.sorted()if you are still in Java 7. // Unsorted string array String[] strArray = {"Alex","Charles","Dean","Amanda","Brian"}; ...
String s3 = new String(array); System.out.println(s3); [注意]: String是引用类型,内部其实并不存储字符串本身,在String类的实现源码中,String类实例变量是这样的 public final class String implements java.io.Serializable, Comparable<String>, CharSequence, ...