All Basic Articles

Output of the Program | Pointer to a Constant or Constant Pointer?

Predict the output of the below program. C++ #include <iostream> using namespace std; int main() { int x = 5; int * const ptr… Read More

C-Output

Program Output

Output of the Program | Use Macros Carefully!

Predict the output of the below program C++ #include <iostream> using namespace std; #define square(x) x*x int main() { int x; x… Read More

C-Output

cpp-macros

Program Output

Remove characters from the first string which are present in the second string

Given two strings string1 and string2, remove those characters from the first string(string1) which are present in the second string(string2). Both strings are different and… Read More

Amazon

Zoho

DSA

Strings

Write a function to get Nth node in a Linked List

Write a GetNth() function that takes a linked list and an integer index and returns the data value stored in the node at that index… Read More

GetNth

Linked Lists

Python-Data-Structures

DSA

Linked List

Print all the duplicate characters in a string

Algorithm: Let input string be "geeksforgeeks" 1: Construct character count array from the input string. count['e'] = 4 count['g'] = 2 count['k'] = 2 …… 2: Print all the indexes from the constructed array which have value greater than 0.

String Duplicates

DSA

Strings

Remove duplicates from a given string

Given a string S which may contain lowercase and uppercase characters. The task is to remove all duplicate characters from the string and find the… Read More

frequency-counting

DSA

Strings

Program for Sum of the digits of a given number

Given a number, find the sum of its digits. Examples : Input: n = 687Output: 21 Input: n = 12Output: 3 Recommended Practice Sum Of… Read More

cpp-puzzle

number-digits

C Language

C++

DSA

Recursion

C Program for Sum the digits of a given number

Given a number, find sum of its digits.Example : Input : n = 687 Output : 21 Input : n = 12 Output : 3… Read More

C Programs

How will you print numbers from 1 to 100 without using a loop?

If we take a look at this problem carefully, we can see that the idea of “loop” is to track some counter value, e.g., “i… Read More

cpp-puzzle

C Language

C++

DSA

Recursion

Find maximum occurring character in a string

Given string str. The task is to find the maximum occurring character in the string str. Examples: Input: geeksforgeeksOutput: eExplanation: ‘e’ occurs 4 times in the… Read More

Morgan Stanley

DSA

Hash

Strings