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...
方法A:使用StringBuilder publicStringreverseUsingStringBuilder(Stringstr){returnnewStringBuilder(str).reverse().toString();} 1. 2. 3. 方法B:使用循环 publicStringreverseUsingLoop(Stringstr){StringBuilderreversed=newStringBuilder();for(inti=str.length()-1;i>=0;i--){reversed.append(str.charAt(i));}...
Console.WriteLine(string.Equals(expected, StringReverse.ReverseByStringBuilder(a))); Console.WriteLine(string.Equals(expected, StringReverse.ReverseByStringBuilder2(a))); Console.WriteLine(string.Equals(expected, StringReverse.ReverseByStack(a))); Console.WriteLine(string.Equals(expected, StringReverse.Rever...
public String reverseVowels(String s) { StringBuilder builder=new StringBuilder(s); int i=0; int j=builder.length()-1; while(i<j) { boolean a=isVowel(builder.charAt(i)); boolean b=isVowel(builder.charAt(j)); if(a&&b) { char tmp=builder.charAt(i); builder.setCharAt(i, builder.ch...
We can also reverse a string easily, using aStringBuilder.reverse()method. Thereverse()method causes the characters of String to be replaced by the reverse of the sequence. Reverse String using StringBuilder StringblogName="How To Do In Java";StringreverseString=newStringBuilder(blogName).reverse...
publicclassSolution{/* *@params: A string *@return: A string */publicString reverseWords(String s) {// write your code hereif(s.length() ==0|| s ==null){return""; }//按照空格将s切分String[]array= s.split(" "); StringBuilder sb =newStringBuilder();//从后往前遍历array,在sb中插...
Cheating Method using StringBuilder publicclassSolution {publicString reverseString(String s) {returnnewStringBuilder(s).reverse().toString(); } } Classic Method by swapping first and last publicclassSolution {publicString reverseString(String s) {char[] word =s.toCharArray();inti = 0;intj = s...
String via StringBuilder:");longstartTimeV1=System.nanoTime();StringreversedV1=Strings.reverseWordsV1(TEXT);displayExecutionTime(System.nanoTime()-startTimeV1);System.out.println("Reversed: \n"+reversedV1);System.out.println();System.out.println("Reverse words in String using Java 8 ...
The interviewees may ask you to write various ways to reverse a string, or they might ask you to reverse a string without using built-in methods, or they might even ask you to reverse a string using recursion. There are occasions where it is simpler to write problems involving regular exp...
public class TestReverse { public static void main(String[] args) { String str2 = "Hello"; str2 = new StringBuffer(str2).reverse().toString(); System.out.println(str2); String message = "Hello"; StringBuilder rev = new StringBuilder(); for (int i = message.length() - 1; i >=...