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Graph Search (Depth Search)



Depth Search is an algorithm that traverses a graph to find an item, the logic behinds this search is this, Let’s assume that the first node be A, and I am looking at the neighbour of A node and there are 3 neighbours, B,C,E are the nodes alphabeticaly in order.

The first node to be visited in this list is B, after, I am going to visit the neighbour of B’s node, and it has only one neighbour, and that is D, now the turn is D’s neighbour and that is only one, final node is G.

Then, the tour is A, B, D, G and if the item being searched has been found on this stage, then we terminate the process, if we can not find it, then we should backtrack from G to the previous node, and that is D and now I am searching D’s neighbours except G…

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