Level Order Traversal Using Queueįirstly we insert the root into the queue and iterate over the queue until the queue is empty. Space complexity: For a skewed tree space complexity will be O(n) and for a Balanced tree, the call stack uses O(log n) space, (i.e., the height of the balanced tree). Time complexity: For a skewed tree, time complexity will be O(n^2). Implementation of Recursive Approach Level Order Traversal in C Level Order Traversal in C++ Level Order Traversal in Java Level Order Traversal in Python Now, call recursively call both the children of the current root with decrementing the value of level by 1.Check if level is equal to 1 then print the current root value.First check if root is null then return.In the LevelOrder function we pass two parameters level and root.In the CurrentLevel function, we find the height of the tree and call the LevelOrder function for every level between 1 to height. One of them is used to print all nodes at a particular level (CurrentLevel), and another is used to print level order traversal of the tree (Levelorder). There are basically two functions in this approach.
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