Programming Articles - Page 832 of 3363

In this article, we will understand the Reversal algorithm to rotate a given array by k-elements to the right, for example −Input : arr[ ] = { 4, 6, 2, 6, 43, 7, 3, 7 }, k = 4 Output : { 43, 7, 3, 7, 4, 6, 2, 6 } Explanation : Rotating each element of array by 4-element to the right gives { 43, 7, 3, 7, 4, 6, 2, 6 }. Input : arr[ ] = { 8, 5, 8, 2, 1, 4, 9, 3 }, k = 3 Output : { 4, 9, 3, 8, ... Read More

In the given problem, we are given an array, and we are required to rotate the array by d elements using a reversal algorithm, for example −Input : arr[] = [1, 2, 3, 4, 5, 6, 7], d = 2 Output : arr[] = [3, 4, 5, 6, 7, 1, 2] Explanation : As you can see we have to rotate this array by d = 2 but our main task is to achieve this by using a reversal technique.We make some calculations for the rotation of the array by reversal technique, and we conclude that −First, we reverse the ... Read More

If you are a programmer, you write the code; If you write the code, you use the function; if you use the function, you use return and exit statements in every function. So In this article, we will discuss what a return statement and exit statement are and their differences.In C++, return is a statement that returns the control of the flow of execution to the function which is calling.Exit statement terminates the program at the point it is used.int main()This is where the execution of the program begins. The program is executed from the main() function, and since ... Read More

Sizeof operator is one of the most used operators in C language used to compute the size of any data structure or data type that we pass through it. The sizeof operator returns unsigned integer type, and this operator can be applied to primitive and compound data types. We can use sizeof operator directly to data types and know the memory it is taking up −Example#include using namespace std; int main() {    cout

In this article, we will discuss finding the number of repeated units divisible by N. Repeated units are the repetitive numbers of 1 only, Let R(k) be the repetitive unit where k is the length of 1’s. E.g R(4) = 1111. So we need to find the minimum number of k for which R(k) is divisible by N, for example −Input : N = 13 Output : k = 6 Explanation : R(6) i.e 111111 is divisible by 13. Input : N = 31 Output : k = 15Approach to find The SolutionYou can approach this problem by checking ... Read More

In this article, we will discuss how to remove elements between two zeros from a given string that contains only zero’s and one’s character. The final string should not contain any character ‘1’ surrounded by 0’s. For example −Input : string = “110010” Output : “11000” Explanation: 1 is found between two zeros at the 4th index. Input : string = “0010” Output : “000” Explanation : 1 is found between two zeros at the 2nd index.Approach to find The SolutionWe can apply a simple approach, i.e., traverse the string using a loop and check the previous and next ... Read More

In this article, we are given a number n, and we need to remove repeated digits in a given number.Input: x = 12224 Output: 124 Input: x = 124422 Output: 1242 Input: x = 11332 Output: 132In the given problem, we will go through all the digits and remove the repeating digits.Approach to find The SolutionIn the given approach, we will go through all the digits of n from right to left now. We go through digits of n by taking mod of n with 10 and then dividing n with 10. Now our current digit is n ... Read More

We are provided an array, and we are tasked to remove the leading zeros from the given array and then print the array.Input : arr[] = {0, 0, 0, 1, 2, 3} Output : 1 2 3 Input : arr[] = {0, 0, 0, 1, 0, 2, 3} Output : 1 0 2 3We can make a new array that doesn’t contain the leading zeroes of the previous array in the given problem.Approach to find The SolutionIn this approach, we will go through the array and insert all the numbers but no leading zeros.Example#include using namespace std; ... Read More

We are provided with a singly linked list, and we are tasked to remove the last node from that list. In this problem, we are simply going to traverse through the given list and simply remove the last node.Approach to find The SolutionIn this approach, we go through the given list, and we keep track of the previous node and the current node. Now when our current node becomes the last node, we change previous -> next to NULL and delete the current node.Example#include using namespace std; struct Node {    int data;    struct Node* next; }; ... Read More

Given a linked list, we need to remove its first element and return the pointer to the head of the new list.Input : 1 -> 2 -> 3 -> 4 -> 5 -> NULL Output : 2 -> 3 -> 4 -> 5 -> NULL Input : 2 -> 4 -> 6 -> 8 -> 33 -> 67 -> NULL Output : 4 -> 6 -> 8 -> 33 -> 67 -> NULLIn the given problem, we need to remove the first node of the list and move our head to the second element and return the head.Approach to ... Read More