How do you construct a binary tree when traversals are given?

To construct a binary tree from given traversals, you typically need the inorder and either the preorder or postorder traversal. First, use the root node from the preorder (or postorder) traversal to identify the left and right subtrees by finding its index in the inorder traversal. Recursively repeat this process for the left and right subtrees until the entire tree is constructed. This method ensures that the relationships between nodes are accurately recreated based on the given traversals.