Reverse

161+ posts

Last Updated: 16 March 2023

Given an unsigned integer N. The task is to reverse all bytes of N without using a temporary variable and print the reversed number.Examples:Input: N = 0xaabbccddOutput: 0...read more

Reverse individual words with O(1) extra space

Last Updated: 12 July 2025

Given a string str, the task is to reverse all the individual words.Examples:Input: str = "Hello World"Output: olleH dlroWInput: str = "Geeks for Geeks"Output: skeeG rof s...read more

DSA

Reverse

Add two numbers represented by Linked List without any extra space

Last Updated: 12 July 2025

Given two numbers represented by two linked lists, write a function that returns sum list. The sum list is linked list representation of addition of two input numbers. Exp...read more

Linked List

DSA

Reverse

Reverse alternate k characters in a string

Last Updated: 16 December 2022

Given a string str and an integer k, the task is to reverse alternate k characters of the given string. If characters present are less than k, leave them as it is.Examples...read more

Count of all N digit numbers such that num + Rev(num) = 10^N - 1

Last Updated: 24 June 2022

Given an integer N, the task is to find the count of all N digit numbers such that num + Rev(num) = 10N - 1Examples:Input: N = 2Output: 9All possible numbers are18 + 81 = ...read more

DSA

Reverse

number-theory

Reverse Middle X Characters

Last Updated: 19 October 2023

Given a string str and an integer X. The task is to reverse the middle X characters of the given string and then print the modified string. Note that len(str) - X is alway...read more

Program to copy the contents of one array into another in the reverse order

Last Updated: 11 July 2025

Given an array, the task is to copy these array elements into another array in reverse array.Examples:Input: array: 1 2 3 4 5 Output: 5 4 3 2 1 Input: array: 10 20 30 40 5...read more

Add index to characters and reverse the string

Last Updated: 07 August 2022

Given a string str, the task is to encrypt and reverse the string. The string is encrypted by adding every character of the string with it's index in the string i.e. if ch...read more

Technical Scripter 2018

DSA

Reverse

Substring Reverse Pattern

Last Updated: 12 September 2022

Given string str, the task is to print the pattern given in the examples below:Examples:Input: str = "geeks"Output:geeks*kee***e**The reverse of "geeks" is "skeeg"Replace ...read more

Reverse middle words of a string

Last Updated: 12 September 2022

Given a string str, print reverse all words except the first and last words.Examples:Input : Hi how are you geeks Output : Hi woh era uoy geeksInput : I am fineOutput : ...read more

Program to find first N Iccanobif Numbers

Last Updated: 11 July 2025

Given a number N. The task is to find first N Iccanobif Numbers.Iccanobif Numbers are similar to Fibonacci Numbers. The K-th Iccanobif number can be obtained by addition o...read more

Find a palindromic string B such that given String A is a subsequence of B

Last Updated: 07 December 2022

Given a stringA. Find a stringB, where B is a palindrome and A is a subsequence of B.A subsequence of a string is a string that can be derived from it by deleting some (no...read more

DSA

palindrome

Reverse

Clone a stack without extra space

Last Updated: 11 July 2025

Given a source stack, copy the contents of the source stack to the destination stack maintaining the same order without using extra space.Examples:Input: st = [ 3, 2, 1 ]O...read more

Technical Scripter 2018

DSA

Reverse

StringBuilder reverse() in Java with Examples

Last Updated: 11 December 2022

The reverse() method of StringBuilder is used to reverse the characters in the StringBuilder. The method helps to this character sequence to be replaced by the reverse of ...read more

Print Doubly Linked list in Reverse Order

Last Updated: 11 January 2023

Given a doubly-linked list of positive integers. The task is to print the given doubly linked list data in reverse order.Examples:Input: List = 1 = 2 = 3 = 4 = 5Output:...read more

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