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Given the root of an n-ary tree, return the preorder traversal of its nodes’ values. Nary-Tree input serialization is represented in their level order traversal. Each group of children …
Teaching Kids Programming: Videos on Data Structures and Algorithms You are given a list of integers weights representing peoples’ weights and an integer limit representing the weight limit of …
There is a special keyboard with all keys in a single row. Given a string keyboard of length 26 indicating the layout of the keyboard (indexed from 0 to …
Teaching Kids Programming: Videos on Data Structures and Algorithms You are given a list of integers nums and an integer target. Return the lowest sum of pair of numbers …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given two alphabet (can be lower and/or uppercase) strings s0 and s1, determine if one is a rotation of the …