Question
Consider a Binary Search Tree (BST) where every node
stores a key and two child pointers. What is the time complexity of finding the Lowest Common Ancestor (LCA) of two nodes in a balanced BST with n nodes?ÂSolution
The time complexity of finding the LCA in a balanced BST is O(log n). A Binary Search Tree (BST) ensures that, for every node, all values in its left subtree are smaller, and all values in its right subtree are larger. To find the LCA of two nodes, you can perform a binary search, comparing the node values with the LCA candidates and traversing left or right subtrees based on comparisons. As the height of a balanced BST is log n, finding the LCA involves a traversal that follows the height of the tree, thus resulting in a time complexity of O(log n). Why Other Options are Incorrect: A) O(n): This is the time complexity of finding the LCA in an unbalanced BST, not a balanced one. C) O(n log n): This time complexity is typically associated with certain sorting algorithms, not BST operations. D) O(1): This is incorrect because finding the LCA requires traversal in a balanced BST. E) O(n² ): This time complexity is associated with certain algorithms in dynamic programming, not for BST operations.
Select the correct option that indicates the arrangement of given words in the order in which they appear in the English dictionary order.
1. Sou...
Select the option that represents the correct order of the given words as they would appear in an English dictionary:
1. Magnify
2...Arrange the given words in the sequence in which they occur in the dictionary.
1- Failure
2- Faith
3- Father
4- Funeral Â
5- Future
Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary.
1- Hyena<...
Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary.
1. Sandal...
Arrange the following words as per order in the dictionary.
A.Indignity
B. Individual
C.Indication
D. Industrial
...
Which of the following sequence represents the correct dictionary order of the following words?
1. Marvel
2. March
3. Maroon
4. Market
5. Margin
Select the correct option that indicates the arrangement of the given words in the reverse order in which they appear in an English dictionary.
1...
Arrange the given words as in a dictionary and tick the one that come last.
Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary.
1. Opposi...