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First step i your DSA journey. This linear data sctructure is often asked in most of the interviews.
A very simple and interesting data structure. You need a clear understanding of a language to tackle its problems.
Another liner data structure. It is also used to solve other DSA problems.
As the name suggests, here data is stored in the form of queue and follows FIFO.
Base topic to learn before advanced topic such as Dynamic Programing, Tree etc.
Huge optimization in searching (From O(N) to O(logN)) by both recursive and iterative approach.