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 -> ... Read More

In this article, we will explain the way to remove every k-th node of the linked list. We must delete every node that sits on the multiple of k, i.e., we have to delete the node on positions k, 2*k, 3*k, etc.Input : 112->231->31->41->54->63->71->85    k = 3 Output : ... Read More

In this article, we’ll be solving the problem of removing a given word from a given string. For example −Input : str = “remove a given word ”, word = “ remove ” Output : “ a given word ” Input : str = “ god is everywhere ”, ... Read More

In this article, we will discuss the problem of rearranging a given array of n numbers. Basically, we have to select elements from the array. For selecting each element, we get some points that will be evaluated by the value of the current element * a number of elements selected ... Read More

We are given an array; we need to arrange this array in an order that the first element should be a minimum element, the second element should be a maximum element, the third element should be 2nd minimum element, the fourth element should be the 2nd maximum element and so ... Read More

We are given a sorted array. We need to arrange this array in maximum, minimum form, i.e., the first element is the maximum element, the second element is the minimum element, the third element is 2nd maximum element, the fourth element is 2nd minimum element, and so on, for example ... Read More

In the given problem, we need to rank all the given elements of an array, with the smallest number having the smallest rank and the largest having the largest rank. We also need to change the ranks of a number depending on their frequencies, for examples −Input : 20 30 ... Read More

In this article, we will give an array of size n, which will be an integer. Then, we will compute the sum of elements from index L to index R and execute the queries multiple times, or we need to calculate the sum of the given range from [L, R]. ... Read More

In the given problem, we are required to print all the divisors of a given integer n.Input: 15 Output: 1 3 5 15 Explanation Divisors of 15 are: 1, 3, 5, 15 Input: 30 Output: 1 2 3 5 15 30In the given problem, we can apply the approach ... Read More

In this article, we are given an array of integers. We are tasked to find the bitwise OR of all the numbers present in the given range, for example, Input: arr[] = {1, 3, 1, 2, 3, 4}, q[] = {{0, 1}, {3, 5}} Output: 3 7 1 OR 3 ... Read More