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# GeeksForGeeks Interview Questions

With rising competition for a great placement opportunity, the standards for selection are getting higher day by day. In such circumstances, a proper strategy and practice will help you stand above the crowd. First, you have to define yourself by knowing your topics well in any interviews.

Some great tips are hence indicated in the below article for GeeksforGeeks interview questions, data structure GeeksforGeeks for companies like Amazon, Microsoft, Adobe etc.

## GeeksforGeek data structure interview questions:-

A well-defined syllabus is an excellent start to prep you up in the right direction. A GeeksforGeeks interview question data structures covers a wide area of topics for coding. While preparing for programming interview questions you could segregate them into 14 main chapters.

1. Arrays
2. string
4. Stack and queue
5. Tree and BST
6. Heap
7. Recursion
8. Hashing
9. Graph
10. Greedy
11. Dynamic programming
12. Divide and conquer
13. Backtracking
14. Bit Magic

## Common GeeksforGeeks array interview questions :

Array refers to the set of solutions that how is an operational application to an entire set off value in one go.

Some of the important data structures GeeksforGeeks question in this area are :

1. Creation of sub-array with a given sum
2. Counting the triplets
3. Sorting of arrays in form of 0s, 1s and 2s
4. Conversion of array
5. Knowledge of equilibrium point
6. Use of minimum platforms and leaders in an array
7. Chocolate distribution problem solving
8. Zig-Zag fashion array conversion
9. Knowledge of the last index of 1

## GeeksforGeeks string interview questions :

String means a data type used in programming usually in form of an integer or a floating-point. It is used to represent a piece of textual information rather than a number. Some of the GeeksforGeeks interview questions in the string are:-

1. Reversal of text in a given string
2. Method of permutations for a given string
3. Finding the longest palindrome in a string
4. Recursively removing the adjacent duplicates in a string
5. Method of checking rotation of a string at two different places
6. Knowledge of anagram
7. Implement of Atoi and strstr
8. Conversion of the Roman number to an integer

## Programming interview questions for linked list

In information technology linked list refers to a linear Collection of data whose arrangement is not given by the physical position in the memory. Here are the top practice interview questions collected from an ideal GeeksforGeek interview question paper.

1. Predicting middle element in a given linked list
2. Reversing a given linked list
3. Rotation of a linked list
4. Reversal of a linked list in groups of a particular size
5. Intersection point prediction in Y shaped building list
6. Detecting loops in a given linked list
7. Removing loops in the given linked list
8. Implementation of queue and stack in a given linked list
9. Deleting data structure without header point

## GeeksforGeeks interview questions on stack and queue

Stack and queue are two different elements in computer programming. Static is usually a container of objects that are supposed to be inserted or removed according to the LIFO principle. While queue is a container of objects in a linear collection that is supposed to be inserted and removed according to the FIFO principle. Here are some commonly asked data structure GeeksforGeeks questions in a coding interview :-

1. Application of parenthesis checker
2. Predicting next largest element using the knowledge of stack and queue
3. Creation of a queue using two stacks
4. Creation of a stack using two queues
5. Predicting minimum element from a given stack
6. Knowledge of circular tour and LRU Cache
7. Getting the first non-repeating character in a given stream
8. Knowledge of rotten oranges
9. Predicting maximum of all subarrays in size of k

## GeeksforGeeks interview questions for tree and BST.

In Computer Science binary search tree is an arrangement of the elements that follow a certain order whereas a binary tree does not follow any such order. Some of the most commonly asked GeeksforGeeks interview questions regarding this topic are-

1. Getting a print of the left view of a binary tree
2. Checking for BST presence
3. getting a print of the bottom view of a given binary tree
4. Printing a given binary tree according to a vertical order
5. Performing level order traversal in a spiral form
6. Connecting notes present at the same label
7. Predicting lowest common ancestor in a BST
8. Converting a binary tree into a double linked list
9. Checking for height balance in a given binary tree
10. Serializing or desterilizing a given binary tree

## GeeksforGeeks Heap interview questions

Most of the GeeksforGeeks interview questions in the area of Heap are small but significant. Heap refers to a specialized tree-based data structure that is essential for satisfying a completely in a heap property.

Here are some GeeksforGeeks interview questions regarding this topic-

1. Finding the median in a given stream
2. Sorting different heap
3. Performing operations on a given binary min-heap
4. Performing rearrangement of characters
5. Merging of k-type sorted linked lists
6. Predicting K largest element in a given stream

## GeeksforGeeks interview questions on Recursion

Recursion defines as a method of solving a problem where the answer depends on predicting solutions for smaller instances in the same problem. Some of the commonly asked questions in this field are:-

1. Performing flood field algorithm
2. Application of knowledge in several parts
3. Combination of sums
4. Application of a special keyboard
5. Knowledge of Josephus problem

## GeeksforGeeks interview questions on Hashing

In computer terminology, Hashing refers to passing a certain quantity of data through a formula that produces are results in the hash. While a Hash Function is any function that can be used for data mapping in arbitrary size to fixed-size values. Commonly asked data structure GeeksforGeeks interview in this field are

1. Using the technique of relative sorting
2. Performing sorting of different elements in a given array by frequency
3. Predicting largest subarray with zero-sum
4. Knowledge of common elements
5. Finding all sum numbers through hashing
6. Making sum equal by swapping pairs.
7. Counting distinct elements in every window
8. Array pair sum divisibility problem solving
9. Finding the smallest window in a given string containing all the characters of another set of string
10. Finding a solution for the first element to occur K-Times
11. Checking for frequency to be equal in hashing

## GeeksforGeeks interview questions on graphs:

In computer terminology graph stands for Non-linear Data Structure made up of nodes and edges. Some of the commonly asked GeeksforGeeks interview questions on this topic are as follows-

1. Predicting depth and breadth of the first traversal
2. Detecting cycle in an undirected and a directed graph
3. Knowledge of topological sorting
4. Finding the numbers for Islands
5. Implementing Dijkstra coding.
6. Application of minimum swaps
7. Knowledge is strongly connected components
8. Knowledge in Floyd Marshall and alien dictionary
9. Application of circle of Strings
10. Finding a solution to the snake and ladder problem

## Some of the important data structures GeeksforGeeks questions on Greedy

In Computer Science a greedy algorithm is any procedural algorithm that follows the problem-solving methodology of making the locally optimal choice at each step. Some of the important programming interview questions asked from this area are as follows-

1. Problems of GeeksforGeeks interview in activity selection
2. Prediction of N meetings in one room
3. Knowledge in coin piles and maximize toys
4. Finding page faults in LRU
5. Predicting the largest number possible
6. Minimizing the height
7. Minimizing the sum of a given product
8. Application of Huffman decoding
9. Knowledge of minimum spanning tree
10. Algorithm of shopping Candy Store
11. Problem-solving in the question of Geeks collects the ball.

## Top Programming interview questions on Dynamic Programming.

In computer terminology, dynamic programming computes the solution bottom-up by synthesizing them for smaller sub solutions. Then it tries different possibilities and choices before arriving at the final optimal set of choices. Different data structure GeeksforGeeks question asked in this topic are-

1. Knowledge of the minimum operation and minimum number of coins
2. Finding maximum length chain
3. Maximum sum increasing sub-sequence calculation
4. Minimum number of jumps problem solving
5. Editing distance GeeksforGeeks interview question
6. Predicting longest common sub-string
7. Longest increasing subsequence calculation
8. Knapsack problem solving
9. Coin change problem solving
10. Subset sum problem solving
11. Box stacking and road cutting.
12. Coding of the path in a matrix

## GeeksforGeeks interview questions on Divide and Conquer

In computer terminology divide and conquer refers to an algorithm design that divides a problem into two or more sub-problems of the related type. It breakdown a problem in such a way that it becomes so simple to be solved directly. The knowledge of this technique is used for answering the following type of GeeksforGeeks interview.

1. Finding the element appearing once in any sorted array
2. Searching for a rotation in an array
3. Performing binary search
4. Calculation of some of the middle elements of two sorted arrays
5. Performing quick sort and merge sort
6. Predicting K-th element of two sorted arrays

## Some of the important asked GeeksforGeek interview questions from Backtracking and Big Magic

In computer, terminology backtracking is a general algorithm used to find solutions for some constraint satisfaction computational problems. While Bit magic refers to the minimum number of sleeping adjacent bits required to make a given binary string equal. Most commonly asked data structure GeeksforGeeks interview questions from this topic are-

1. N Queen problem solving
2. Solving a given Sudoku
3. Rat in a maze problem solving
4. Coding in word boggle
5. Generating IP addresses according to a given problem
6. Finding the first set of bit
7. Knowledge of rightmost different bit and set kth bit
8. swapping of odd and even bits
9. Knowledge of sparse number and longest consecutive in 1’s
10. Counting the total set of Bits given
11. Predicting bit difference
12. Coding in maximum subset XOR.

## A sample interview question paper to test your preparation level

Sample practice interview questions not only help you to prepare a good strategy but also boost your core self-confidence. Here is a set of 10 practice questions to test your knowledge and skills in programming.

1. An unsorted array of integers is given; please find the max product formed by multiplying three numbers. Note that you cannot Sort the array and watch out if they are in negative numbers.
2. Print the middle element of a given linked list
3. Double-checking singleton through Java
4. Give the written print for the given Matrix in the spiral form
5. Predict DFS on the graph and its representation.
6. Applied the knowledge of multi-threading concept
7. Predict if the two rectangles are overlapping each other
8. How most hash is implemented through Java internally
9. Find the comparators in a given tree set
10. Implement a stack using the given Queues.

## Some of the commonly asked mathematical and puzzle Greeks for Greeks interview questions.

Programming interview question at the current times also includes mathematics-based knowledge and skills. Here are a few questions from this topic to help you prepare for an actual coding Greeks for Greeks interview.

1. Print the pattern and the table given
2. Knowledge of series AP and GP
3. Collation of closest number and Armstrong number
4. Reverse digit and  jumping numbers calculation
5. Performing LCM and GDM of two numbers
6. Knowledge of computer nPR and nCR
7. Three divisor solutions
8. Check if Four Points are information of a square
9. Trailing of zeros in a factorial, etc.

Through this guide, you will learn algorithmic methods to solve various computational problems and implement algorithmic coding problems. This guide provides you with various planning challenges to face in your next job interview. Practice is the key to success who any coding interview. Get to know all the major concepts and delve deep into the various processes, which will help you prepare to enter the industry.