This we started working on trees as our new data structure. The main advantage of trees is whenever you want to represent a system or data with a hierarchy, trees are your main tool to use. To give an example, mathematical expressions are one of the best ways to implement trees with. As each operator we use is comprised of a symbol and with left and right parts, we can use binary trees to represent them while using leaves to symbolize basic numbers. On this example, hierarchy is used to represent the priorities associated with the operations since (2+1)*3 is completely different than 2+(1*3). We also learned to traverse through trees with recursion since iterating through trees despite being doable, is much more lengthy to do.

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