How to reverse a string in java

Example Compare two strings: String myStr1 = "Hello"; String myStr2 = "Hello"; System.out.println(myStr1.compareTo(myStr2)); // Returns 0 because they are equal Definition and Usage The compareTo() method compares two strings lexicographically. The comparison is based on the Unicode value of each character in the strings. The method returns 0 if the string is equal to the other string. A value less than 0 is returned if the string is less than the other string (less characters) and a value greater than 0 if the string is greater than the other string (more characters). Tip: Use Tip: Use the Syntax public int compareTo(String string2) public int compareTo(Object object) Parameter Values Parameter Description string2 A String, representing the other string to be compared object An Object, representing an object to be compared Technical Details Returns: An int value: 0 if the string is equal to the other string. 0 if the string is lexicographically greater than the other string (more characters)

Reversing a string is one of the most frequently asked questions in a Java technical interview. The Interviewers may ask you to write different ways to reverse a string, or they may ask you to reverse a string without using in-built methods, or they may even ask you to reverse a string using recursion. Below are various methods you can use to reverse a string in Java. Reverse String in Java, Easiest Way The easiest way to reverse a string in Java is to use the built-in reverse() function of the StringBuilder class. Example: package io.devqa.tutorials; import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; class ReverseString Share this on:

1. Introduction In this tutorial, You'll learn how to write a java program to reverse a string without using string inbuilt function reverse(). This is a very common interview question that can be asked in many forms as below. A) java program to reverse a string without using string inbuilt function B) java program to reverse a string using recursion C) java program to reverse a string without using the reverse method C) Try using other classes of Java API (Except String). The interviewer's main intention is not to use the String class reverse() method. 2. Solution 1: Using charAt() Method package com.java.w3schools.string.reverse; public class ReverseString Output: golb sloohcsw3w-avaj Output: Reversed String : desrever eb ot gnirtS niaM 5. Additional References: Other references used in this article are below. 6. Conclusion We've seen the 3 possible solutions to reverse a string in java without using the reverse method. Good way is to write a program to reverse a string using a recursive approach. This is to avoid the string reverse() method and for loop. Because for loop tells that you are using the very basic concepts of programming language. Better to use a recursive approach and explain properly to them. If you like, please share it with friends. accumulo,1,ActiveMQ,2,Adsense,1,API,37,ArrayList,18,Arrays,24,Bean Creation,3,Bean Scopes,1,BiConsumer,1,Blogger Tips,1,Books,1,C Programming,1,Collection,8,Collections,37,Collector,1,Command Line,1,Comparator,1,Compile Err...

Am trying to reverse a string using a method in java, I can fetch all the elements of the string and print them out in order via a loop, my problem is reversing the string such that the first comes last and the last comes first, I tried to find a reverse function to no avail... Here is what I have so far... private static void palindrome() That loop succeeds in printing out the single characters from the string. You can use StringBuilder like this: import java.lang.*; import java.io.*; import java.util.*; class ReverseString Using Java 9 codePoints stream you can reverse a string as follows. This example shows the reversal of a string containing surrogate pairs. It works with regular characters as well. String str = "𝕙𝕖𝕝𝕝𝕠 𝕨𝕠𝕣𝕝𝕕"; String reversed = str.codePoints() // Stream .mapToObj(Character::toString) // concatenate in reverse order .reduce((a, b) -> b + a) .get(); System.out.println(reversed); // 𝕕𝕝𝕣𝕠𝕨 𝕠𝕝𝕝𝕖𝕙 See also: You simply need to loop through the array backwards: for (int i = len - 1; i >= 0; i--) You start at the last element which has its index at the position length - 1 and iterate down to the first element (with index zero). This concept is not specific to Java and also applies to other data structures that provide index based access (such as lists). Use the built-in reverse() method of the StringBuilder class. private static void palindrome() Added reverse() function for your understanding import java.util.Scanner; public class P3 you can try the buil...

1. Introduction In this tutorial, You'll learn how to write a java program to reverse a string without using string inbuilt function reverse(). This is a very common interview question that can be asked in many forms as below. A) java program to reverse a string without using string inbuilt function B) java program to reverse a string using recursion C) java program to reverse a string without using the reverse method C) Try using other classes of Java API (Except String). The interviewer's main intention is not to use the String class reverse() method. 2. Solution 1: Using charAt() Method package com.java.w3schools.string.reverse; public class ReverseString Output: golb sloohcsw3w-avaj Output: Reversed String : desrever eb ot gnirtS niaM 5. Additional References: Other references used in this article are below. 6. Conclusion We've seen the 3 possible solutions to reverse a string in java without using the reverse method. Good way is to write a program to reverse a string using a recursive approach. This is to avoid the string reverse() method and for loop. Because for loop tells that you are using the very basic concepts of programming language. Better to use a recursive approach and explain properly to them. If you like, please share it with friends. accumulo,1,ActiveMQ,2,Adsense,1,API,37,ArrayList,18,Arrays,24,Bean Creation,3,Bean Scopes,1,BiConsumer,1,Blogger Tips,1,Books,1,C Programming,1,Collection,8,Collections,37,Collector,1,Command Line,1,Comparator,1,Compile Err...

Am trying to reverse a string using a method in java, I can fetch all the elements of the string and print them out in order via a loop, my problem is reversing the string such that the first comes last and the last comes first, I tried to find a reverse function to no avail... Here is what I have so far... private static void palindrome() That loop succeeds in printing out the single characters from the string. You can use StringBuilder like this: import java.lang.*; import java.io.*; import java.util.*; class ReverseString Using Java 9 codePoints stream you can reverse a string as follows. This example shows the reversal of a string containing surrogate pairs. It works with regular characters as well. String str = "𝕙𝕖𝕝𝕝𝕠 𝕨𝕠𝕣𝕝𝕕"; String reversed = str.codePoints() // Stream .mapToObj(Character::toString) // concatenate in reverse order .reduce((a, b) -> b + a) .get(); System.out.println(reversed); // 𝕕𝕝𝕣𝕠𝕨 𝕠𝕝𝕝𝕖𝕙 See also: You simply need to loop through the array backwards: for (int i = len - 1; i >= 0; i--) You start at the last element which has its index at the position length - 1 and iterate down to the first element (with index zero). This concept is not specific to Java and also applies to other data structures that provide index based access (such as lists). Use the built-in reverse() method of the StringBuilder class. private static void palindrome() Added reverse() function for your understanding import java.util.Scanner; public class P3 you can try the buil...

Reversing a string is one of the most frequently asked questions in a Java technical interview. The Interviewers may ask you to write different ways to reverse a string, or they may ask you to reverse a string without using in-built methods, or they may even ask you to reverse a string using recursion. Below are various methods you can use to reverse a string in Java. Reverse String in Java, Easiest Way The easiest way to reverse a string in Java is to use the built-in reverse() function of the StringBuilder class. Example: package io.devqa.tutorials; import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; class ReverseString Share this on:

Example Compare two strings: String myStr1 = "Hello"; String myStr2 = "Hello"; System.out.println(myStr1.compareTo(myStr2)); // Returns 0 because they are equal Definition and Usage The compareTo() method compares two strings lexicographically. The comparison is based on the Unicode value of each character in the strings. The method returns 0 if the string is equal to the other string. A value less than 0 is returned if the string is less than the other string (less characters) and a value greater than 0 if the string is greater than the other string (more characters). Tip: Use Tip: Use the Syntax public int compareTo(String string2) public int compareTo(Object object) Parameter Values Parameter Description string2 A String, representing the other string to be compared object An Object, representing an object to be compared Technical Details Returns: An int value: 0 if the string is equal to the other string. 0 if the string is lexicographically greater than the other string (more characters)

Reversing a string is one of the most frequently asked questions in a Java technical interview. The Interviewers may ask you to write different ways to reverse a string, or they may ask you to reverse a string without using in-built methods, or they may even ask you to reverse a string using recursion. Below are various methods you can use to reverse a string in Java. Reverse String in Java, Easiest Way The easiest way to reverse a string in Java is to use the built-in reverse() function of the StringBuilder class. Example: package io.devqa.tutorials; import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; class ReverseString Share this on:

Example Compare two strings: String myStr1 = "Hello"; String myStr2 = "Hello"; System.out.println(myStr1.compareTo(myStr2)); // Returns 0 because they are equal Definition and Usage The compareTo() method compares two strings lexicographically. The comparison is based on the Unicode value of each character in the strings. The method returns 0 if the string is equal to the other string. A value less than 0 is returned if the string is less than the other string (less characters) and a value greater than 0 if the string is greater than the other string (more characters). Tip: Use Tip: Use the Syntax public int compareTo(String string2) public int compareTo(Object object) Parameter Values Parameter Description string2 A String, representing the other string to be compared object An Object, representing an object to be compared Technical Details Returns: An int value: 0 if the string is equal to the other string. 0 if the string is lexicographically greater than the other string (more characters)