You are given a group of n people, labeled from 1 to n. Each person may dislike other people, and they should not be placed in the same group. Your task is to determine if it is possible to split the group of people into two subgroups, such that no one in the same group dislikes each other. Each pair of dislikes is represented by an array of two people who cannot be in the same group. Return true if such a split is possible, otherwise return false.
You are given two integer arrays representing the preorder and postorder traversals of a binary tree. Your task is to reconstruct the binary tree from these two traversals and return the root node of the tree.
You are given an array of strings where each string is of the same length. In one move, you can swap any two characters at even indexed positions or any two characters at odd indexed positions in a string. Two strings are considered special-equivalent if they can be made identical after performing any number of such moves. Your task is to determine how many distinct groups of special-equivalent strings exist in the given array.
Given an integer n, return all possible full binary trees with exactly n nodes. Each node of the tree must have the value 0. A full binary tree is defined as a binary tree where each node has either 0 or 2 children.
Given an array of integers, return the number of distinct bitwise OR results from all the non-empty subarrays. A subarray is a contiguous sequence of elements from the array, and the bitwise OR of a subarray is the bitwise OR of each of the integers in that subarray.
We are given a run-length encoded array where every even-indexed element specifies how many times the following odd-indexed element (a number) is repeated in the original sequence. Your task is to implement an iterator that can return the next ’n’ elements from the decoded sequence when requested.