## Topic : Array & Array Representation (Key Note and Questions)

** Key**** Note:**

*Searching is a process to find a particular element in a set of elements.**Linear search is also known as sequential search in which each elements is to be visit until we reach at same match.**Binary search is a very efficient searching where set of elements are sorted and we can eliminate half set of elements in one time if item not matched.*

### Questions

- Write a note on searching in data structure.
- Write a algorithm for linear search technique.
- Write a algorithm for binary search technique.
- Explain binary search tree.
- Explain binary search tree and its operations. Make a binary search tree for the following sequence of numbers, show all steps: 45,32,90,34,68,72,15,24,30,66,11,50,10
- What are various operations performed in BST?

## Topic : Hashing And Collision (Key Note and Questions)

** ****Key Note:**

- Hashing is a key comparisons search technique that perform searches in
**O(n)**time in the worst case and in an average case it will be done in**O(1)**time. - Hash Collision is a situation in which two or more data elements in the data set
*U,*maps to the same location in the has table. - Open Hashing and Closed Hashing is a Collision resolution technique.

### Questions

- What do you mean by hashing in data structure? Write the types of Hashing.
- Discuss the advantages and disadvantages of hashing over other searching technique.
- What is collision in Data structure? Explain different types of collision resolution technique.
- Explain linear probing collision resolution technique with explanation.

## Topic : Sorting (Key Note and Questions)

** Key Note:**

- Sorting is a technique of arranging elements in a ordered form either in ascending or in descending order.
- Some List of sorting algorithms are Insertion sort, Selection sort, Quick sort, Merge sort, Heap sort etc.

### Questions

- Explain insertion sort. Write insertion sort algorithm and program.
- Explain selection sort. Write selection sort algorithm and program.
- Explain bubble sort. Write bubble sort algorithm and program.
- Explain quick sort. Write quick sort algorithm and program.
- Explain and give heap sort and write its algorithm.
- Explain and give radix sort and write its algorithm.

### Topic : Tree (Key Note and Questions)

** Key Note: **

- Tree is a non-linear data structure that have nodes which is connected using edge.
- All node are arrange as root node, parent node and child node in hierarchical manner.

### Questions

- Explain binary search tree.
- Explain binary search tree and its operations. Make a binary search tree for the following sequence of numbers, show all steps: 45,32,90,34,68,72,15,24,30,66,11,50,10
- What are various operations performed in BST?
- Explain AVL tree. Explain the balancing methods and all rotations of AVL trees with an example.
- Draw an AVL tree on following inputs, assume that tree is initially empty: 45,55,65,75,80,90,100,110,120,130,140,40,35,25,20,15,10,5.