Tag: data structure
Given a list of directory info including directory path, and all the files with contents in this directory, you need to find out all the groups of duplicate files …
Let’s say we want to implement a C++ function based on STL containers to check if a given string contains duplicate characters, or a given vector/array contains duplicate elements. …
A queue is a first-in-first-out (FIFO) data structure. We all know that the list/array in Python is very powerful, that it can be used as a queue itself. For …
A stack is a first-in-last-out (FILO) data structure. We all know that the list/array in Python is very powerful, that it can be used as a stack itself. For …
Design and implement a TwoSum class. It should support the following operations: add and find. add – Add the number to an internal data structure. find – Find if …