Traversing in data structure refers to systematically visiting and processing each element or node within a data structure. It is a process in which each element of a data structure is accessed, and it can be done with any type of data structure. Traversing is performed to display every element of a data structure or to perform any operation on its element. Traversing is also known as iterating over the data structure. There are different ways to traverse a data structure, depending on the type of data structure. For example, in a linked list, traversal means accessing all the elements of the list starting from the head node to the last node. In a tree or graph, traversal means visiting every node at least once. In a tree data structure, there are three types of traversal: In-order traversal, Pre-order traversal, and Post-order traversal. The In-order traversal visits the left subtree first, then the root, and later the right sub-tree. The Pre-order traversal visits the root first, then the left subtree, and later the right sub-tree. The Post-order traversal visits the left subtree first, then the right subtree, and later the root.