Tree is a widely used data structure employed for representing several problems. We studied tree like a special case of acyclic graph. Though, rooted trees are most prominent of all trees. We discussed definition & properties of general trees along their applications. Several tree traversal methods are also discussed.

Binary tree are the special case that have at most two children. Binary trees are mostly implemented via link lists. Several tree traversal mechanisms comprise inorder, preorder & post order. These tree traversals can be implemented via recursive process and non-recursive process. Binary trees have extensive applications within two way decision making problems that employ true/false, yes/no, etc.