# What is the problem with binary search tree?

## What is the problem with binary search tree?

The time to search in a BST is definitely limited by the height (or depth) of the tree. Each step in the search goes down one level, so in the absolute worst case, we will have to go all the way from the root to the deepest leaf in order to find X, or to find out that X is not in the tree.

**What is the runtime complexity of searching for an item in a binary search tree?**

In any binary search tree the time complexity taken is O(h), where h is the height of the tree.. Since it is given that tree is balanced binary search tree so searching for an element in worst case is O(logn).

### How do you check if a given binary tree is BST or not?

Check if a binary tree is BST or not

- All nodes in the left subtree of a node have values less than the node’s value.
- All nodes in the right subtree of a node have values greater than the node’s value.
- Both left and right subtrees are also binary search trees.

**Is binary tree and binary search tree same?**

A Binary Tree is a basic structure with a simple rule that no parent must have more than 2 children whereas the Binary Search Tree is a variant of the binary tree following a particular order with which the nodes should be organized.

#### What are the disadvantages of binary tree?

It’s more complicated than linear search, and is overkill for very small numbers of elements.

**What is the time complexity for the best case situation of binary searching technique?**

O(log n)

The time complexity of the binary search algorithm is O(log n). The best-case time complexity would be O(1) when the central index would directly match the desired value.

## What is time complexity of binary tree?

Time complexity of binary search tree- Time complexity of BST operations is O(h) where h is the height of binary search tree. Binary search tree is a special kind of binary tree.

**How do you calculate time complexity?**

For any loop, we find out the runtime of the block inside them and multiply it by the number of times the program will repeat the loop. All loops that grow proportionally to the input size have a linear time complexity O(n) . If you loop through only half of the array, that’s still O(n) .

### Can a BST have duplicate values?

In a Binary Search Tree (BST), all keys in left subtree of a key must be smaller and all keys in right subtree must be greater. So a Binary Search Tree by definition has distinct keys and duplicates in binary search tree are not allowed.

**What is a full binary tree *?**

Explanation: A full binary tree is a tree in which each node has exactly 0 or 2 children. A Tree in which each node has exactly zero or two children is called full binary tree. A Tree in which the degree of each node is 2 except leaf nodes is called perfect binary tree.

#### What is the time complexity of binary tree?

The binary search tree is a balanced binary search tree. Height of the binary search tree becomes log(n). So, Time complexity of BST Operations = O(logn).

**What is difference between binary heap and binary search tree?**

The Heap differs from a Binary Search Tree. The BST is an ordered data structure, however, the Heap is not. In computer memory, the heap is usually represented as an array of numbers. Similarly, the main rule of the Max-Heap is that the subtree under each node contains values less or equal than its root node.

## What is the running time of binary search?

In a sorted array of n values, the run-time of binary search for a value, is. O(log n), in the worst case. In the best case, the element you are searching for, is in the exact middle, and it can finish up in constant-time.

**Why do we use binary search tree?**

The main reason to use a binary search tree is the fact that it extends the capability of a normal array. An array is a data type that stores data points contiguously in sequence. Each element in the array has an index, and in that way, they can be accessed very quickly with A[0] to get the first element or A[103] for the 104th element, for example.

### What is the process of binary search?

The binary search works in the following manner: The search process initiates by locating the middle element of the sorted array of data After that, the key value is compared with the element If the key value is smaller than the middle element, then searches analyses the upper values to the middle element for comparison and matching

**What is a valid binary search tree?**

The left subtree of a node contains only nodes with keys less than the node’s key.