Category: data structure

Given a Unix path, represented as a list of strings, return its resolved version. In Unix, “..” means to go to the previous directory and “.” means to stay …

Given a list of integers nums and an integer k, return the maximum values of each sublist of length k. Constraints 1 ≤ n ≤ 100,000 where n is …

Teaching Kids Programming: Videos on Data Structures and Algorithms Given a string S of lowercase letters, a duplicate removal consists of choosing two adjacent and equal letters, and removing them. …

Implement FreqStack, a class which simulates the operation of a stack-like data structure. FreqStack has two functions: push(int x), which pushes an integer x onto the stack. pop(), which …

Implement a data structure LastValueMap which has the following methods: void set(int key, int value) which associates key with value. void remove(int key) which removes key and its associated …