Swapipng Adjacent Nodes in Pairs Given a linked list, swap every two adjacent nodes and return the modified head. Node values must not be altered—only node references can be changed. Example: <strong>Input:</strong> head = [1,2,3,4] <strong>Output:</strong> [2,1,4,3] A dummy...
Sequence List Range Deletion Given a sequence of integers, remove all elements that fall within a specified rangee [x, y] and output the remaining elements. #include <iostream> #include <vector> using namespace std; int main() { int n; cin >> n; vector<int> numbers(n); for (i...
Swapping Adjacent Nodes in Pairs Iterative reconfiguration requires a sentinel node to manage boundary conditions and a systematic pointer update sequence. To avoid breaking the chain during link redirection, temporary references must capture the nodes immediately preceding the swap boundaries and t...
A linked list is a dynamic data structure consisting of elements connected through pointers. Unlike arrays, elements are not stored contiguously in memory, allowing efficient insertions and deletions without reallocation. Each element contains data and a reference to the subsequent element. Node Str...