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Baidu Interview Questions and Answers

Updated 5 Feb 2024

Baidu Interview Experiences

2 interviews found

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Leetcode medium to hard

Round 2 - Technical 

(1 Question)

  • Q1. Discuss the trouble shooting
  • Ans. 

    Troubleshooting involves identifying and resolving issues in software systems.

    • Identify the problem by gathering information and reproducing the issue.

    • Break down the problem into smaller parts to isolate the root cause.

    • Use debugging tools and techniques to analyze code and identify errors.

    • Test potential solutions and verify if they resolve the issue.

    • Document the troubleshooting process and share findings with the team.

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. Talk about the salary

Skills evaluated in this interview

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (197)
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Coding Test 

Tree,queue,stack,graph,linked list

Round 3 - HR 

(2 Questions)

  • Q1. Why should we hire u
  • Q2. Tell me about yourself

Interview Preparation Tips

Interview preparation tips for other job seekers - be confident

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (197)

Interview questions from similar companies

I applied via Recruitment Consultant and was interviewed before Jul 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. DS Algo Questions on Trees. Leadership Principles

Interview Preparation Tips

Interview preparation tips for other job seekers - Read up on DS Algo and white paper coding and Leadership Principles

Interview Questionnaire 

13 Questions

  • Q1. Given a string of parenthesis, write a function if it is balanced
  • Ans. 

    Function to check if a string of parenthesis is balanced

    • Use a stack to keep track of opening parenthesis

    • If a closing parenthesis is encountered, pop from stack and check if it matches

    • If stack is empty and a closing parenthesis is encountered, return False

    • If all parenthesis are matched and stack is empty, return True

  • Answered by AI
  • Q2. Given two linked lists each of which represent a number, write a function that returns a linked list that represents the sum
  • Q3. Find the number of occurrences of words in a paragraph
  • Ans. 

    Count the occurrences of words in a paragraph.

    • Split the paragraph into words using whitespace as a delimiter.

    • Create a dictionary to store the count of each word.

    • Iterate through the words and increment the count in the dictionary.

    • Return the dictionary with the word counts.

  • Answered by AI
  • Q4. Find common elements out of two sorted array?
  • Ans. 

    Find common elements out of two sorted array

    • Use two pointers to traverse both arrays simultaneously

    • Compare elements at each pointer and move the pointer of the smaller element

    • If elements are equal, add to common elements list and move both pointers

    • Stop when either pointer reaches end of array

  • Answered by AI
  • Q5. Convert BST to a Doubly linked list?
  • Ans. 

    Convert a Binary Search Tree to a Doubly Linked List.

    • Create a DLL node class with left, right, and data fields.

    • Traverse the BST in-order and add each node to the DLL.

    • Adjust the left and right pointers of each node to create the DLL.

    • Return the head of the DLL.

  • Answered by AI
  • Q6. Given a binary tree in which the node structure has an additional field called “next” which of pointer to tree node type, fill up this field of each node to point to the next node at the same level (NULL i...
  • Ans. 

    The task is to fill the 'next' field of each node in a binary tree to point to the next node at the same level.

    • Use a level order traversal to process the tree nodes.

    • Maintain a queue to store the nodes at each level.

    • For each node, set its 'next' field to the next node in the queue.

    • If a node is the last node at its level, set its 'next' field to NULL.

  • Answered by AI
  • Q7. Given a parentheses string, determine if it is a valid / legitimate parentheses string. For strings consisting of single parentheses type and those consisting of multiple types
  • Q8. You have a dictionary of words. Given a word, print all anagram are in dictionary . State the data structure to be used to solve this problem
  • Ans. 

    To find anagrams of a given word in a dictionary, use a hash table to store sorted versions of each word as keys and their corresponding original words as values.

    • Create a hash table to store the anagrams

    • Iterate through each word in the dictionary

    • Sort the characters of the word and use it as a key in the hash table

    • If the key already exists, add the word to the list of values for that key

    • Print the list of values for the

  • Answered by AI
  • Q9. You have given 10 files and you have given a string suggest data structure which ll facilitate efficient search of string in the file if string appears more than ones in that case u have to print line numb...
  • Ans. 

    Suggest a data structure for efficient search of a string in 10 files and print line number and file if string appears more than once.

    • Use a hash table to store the file name and line number of each occurrence of the string.

    • Iterate through each file and for each line, check if the string is present and update the hash table accordingly.

    • Print the hash table entries for the string.

  • Answered by AI
  • Q10. Write a program to print a tree in vertical order asked more than one approach to do this problem and modified problem many times
  • Q11. Discussion on my current work, difficulties and challenges faced at work, difficult people I have had to work with, instances when I went out of my way to propose creative solutions to existing problems a...
  • Q12. Why do you think amazon is the right place for you?
  • Ans. 

    Amazon is the right place for me because of its innovative culture, vast resources, and opportunities for growth.

    • Amazon's innovative culture aligns with my passion for pushing boundaries and finding creative solutions.

    • The company's vast resources provide the necessary tools and support to develop and deliver high-quality software.

    • Amazon offers numerous opportunities for growth and career advancement, allowing me to con...

  • Answered by AI
  • Q13. You have given an binary matrix which is sorted row wise and column wise write a program to search a row in the matrix having maximum number of zeroes

Interview Preparation Tips

General Tips: My process started off at one their hiring drives. It was ahiring drivein world trade center in Bangalore. It was a tiresome process that comprised a written round followed by 4rounds of interview.
Skills: Algorithm, data structure
College Name: NA

Skills evaluated in this interview

Software Engineer Interview Questions & Answers

Amazon user image Rajesh Paramanandam

posted on 24 Feb 2017

I was interviewed in Oct 2016.

Interview Preparation Tips

Round: Test
Experience: Aptitude was quite easy they just asked us basic questions from Math,logical reasoning and english
Tips: Just think well before u do..
Duration: 1 hour 30 minutes
Total Questions: 40

Round: Behavioural Interview
Experience: It was face to face .. the interviewee asked questions from our resume... Since I m from computer science background they asked some technical questions..

Tips: Beware filling ur resume.. they will ask every stuff that you have in resume

Round: Technical Interview
Experience: Discussion about my project that i vr done in my final year.they asked me what was my role in my project

College Name: Sri ganesh college of engineering and technology

I applied via Campus Placement

Interview Questionnaire 

4 Questions

  • Q1. Boundary traversal of a tree
  • Ans. 

    Boundary traversal of a tree is the process of visiting the nodes on the boundary of a tree in a specific order.

    • The boundary traversal can be done in three steps: left boundary, leaf nodes, and right boundary.

    • For the left boundary, start from the root and traverse down the left side of the tree until reaching a leaf node.

    • For the leaf nodes, perform an inorder traversal to visit all the leaf nodes of the tree.

    • For the ri...

  • Answered by AI
  • Q2. Find the nearest greater value of a given value in a BST
  • Ans. 

    Find the nearest greater value of a given value in a Binary Search Tree (BST).

    • Start from the root node and compare the given value with the current node's value.

    • If the given value is less than the current node's value, move to the left subtree.

    • If the given value is greater than the current node's value, move to the right subtree.

    • Keep track of the closest greater value encountered while traversing the tree.

    • Return the cl

  • Answered by AI
  • Q3. There is an infinite stair case and there are n rounds. in i'th round we can jump i steps at one or discard them. it is given that k'th step is broken , find the max height we can reach with out stepping o...
  • Ans. 

    Given an infinite staircase with a broken kth step, find the maximum height we can reach in n rounds of jumping i steps.

    • We can start by jumping the maximum number of steps in each round until we reach the broken step.

    • After reaching the broken step, we can discard the i steps that would land us on the broken step and jump the remaining steps.

    • We can continue this pattern until we reach the maximum height we can reach wit

  • Answered by AI
  • Q4. Height h was given and form a binary tree of height h and start combining bottom nodes to form a cone like structure

Interview Preparation Tips

Round: Test
Experience: there were 20 MCQ which were on ds , networks and basic coding followed by 2 coding questions.
1) print all the distinct substrings of a given string in lexicographical order
2) find the max i-j value in the given array of 0's and 1's such that there are equal number of zeros and ones, where i is the starting index and j is the ending index of the array.
Tips: make sure that you pass atleast half the test cases for both the question.
Duration: 90 minutes
Total Questions: 22

Round: Technical Interview
Experience: 1) i printed left view then leaves and right view using three level order traversals . he asked me to use one traversal only, then i told him the approach and wrote the working code.
2) told him the approach and coded it.
Tips: look at corner cases properly. the interviewers were friendly, so i felt relaxed.

Round: Technical Interview
Experience: 1) i told him a recursive O(2^n) solution, optimised it to O(n^2). he told me to optimise further. Then i finally came up with O(n) solution after 5 min and he was satisfied . i coded it. he was satisfied finally :D .
2) came up with the approach immediately and coded it. he was satisfied.
Tips: he was very particular about corner cases and he checked the code througly tested it on some cases to ensure it was working.

General Tips: be cool. interviewers were friendly. tell them what you are thinking and be clear with the question before answering to avoid wasteage of time.
Skill Tips: solve problems from codechef, spoj and codeforces. solve interview questions from geeksforgeeks and careercup.
Skills: the way you think, coding skills and knowledge on data structures.
Duration: 3
College Name: IIT Roorkee
Motivation: some good seniors got intern, so i was inspired.
Funny Moments: on the interview day a person came into the conference room to call me for interview, i didnt thought he was interviewer. he was very simple, but intelligent and at last i felt like asking him to ask me one more coding question as it was fun solving questions infront of him, but i didnt do that as i was frightened if i would not be able to answer it would be a negative remark :P .

Skills evaluated in this interview

Interview Questionnaire 

2 Questions

  • Q1. Data struct,algo,
  • Q2. High level data structs and algos

Interview Preparation Tips

Round: Problem Statement
Experience: coding and submission before face to face interview shortlisting
Tips: practice coding ,coding is key to success for SE

Round: Resume Shortlist
Experience: based on marks ,I was called for F2F
Tips: the ppt was to be submitted explaining the approach

Round: Technical Interview
Experience: a lot of brain storming
Tips: understands the nitty gritty of the structs and algos

Round: Technical Interview
Experience: exact code was to be written instead of pseudo code
Tips: get hold of DS,Algos

Interview Preparation Tips

Round: Test
Experience: The first test
contained 25 objective questions encompassing the basics of Computer Science ranging from
data structures, networks and operating systems to theory of computation
Duration: 45 minutes
Total Questions: 25

Round: Test
Experience: The second test contained 3 coding questions.
Duration: 45 minutes
Total Questions: 3

Round: HR Interview
Experience: After the written test, next day I appeared for 3 interviews.
They were checking if you can write code and also if you are aware of the practical issues faced while coding. In the final round they were testing if you could abstract out a real world
problem into code.
Tips: Overall I can say that you must hope for the best and prepare for the
worst. So make sure that you are prepared on all counts. You never know what might go wrong.

Interview Preparation Tips

Round: Test
Tips: Prepare well.

Round: Interview
Tips: The Basics should be good.

Round: Interview
Experience: The Advanced level.

General Tips: Just be yourself. Maintain a good CGPA. Focus as much as you can on internships. They Matter a big deal.
Skills: Adobe Photoshop, Quantitative Ability, Logical Reasoning, Data Interpretation
College Name: IIT KHARAGPUR
Motivation: One of the best companies to work for. Great growth.

Interview Questionnaire 

3 Questions

  • Q1. What is a Tree/binary search tree, How to perform add, delete operation in BST, whats the time complexity, asked to write complete code on paper
  • Ans. 

    BST is a binary tree where left child is smaller and right child is greater. Add/delete ops maintain this property.

    • BST is a data structure used for searching, sorting, and storing data

    • Add operation: Traverse the tree and find the appropriate position to insert the new node

    • Delete operation: Find the node to be deleted, replace it with its inorder successor or predecessor, and delete the successor/predecessor node

    • Time co...

  • Answered by AI
  • Q2. Make a copy of linked list with a random pointer pointing to random node in the linked list, asked to write pseudo code for it
  • Ans. 

    Copy a linked list with random pointers to random nodes in the list.

    • Create a new node for each node in the original list

    • Map the original nodes to their corresponding new nodes

    • Copy the value of the original node to the new node

    • Copy the random pointer of the original node to the new node using the mapping created earlier

  • Answered by AI
  • Q3. Some SQL basic sql queries

Interview Preparation Tips

Round: Resume Shortlist
Experience: On the basis of CV they shortlisted approx 30 candidates for SDE position.
Tips: Must verify your CV from your seniors/batchmates.  
Include all the projects, intern work or hall activities or anything you have done on your own which is related to or interest of company. If you know any back-end/front-end (javascript, php, mysql etc) language do mention. I think the cv shortlist was completely based on previous work and technical skills related to Web Development/Design mentioned in the CV.

Round: Technical Interview
Experience: I had one interview for approx. an hour, it includes both Technical and HR round, well mostly technical. Interview starts with tell me something about yourself.  Asked in detailed about algorithms/web based projects mentioned in CV, make sure that whatever you have written you have complete knowledge about it. Asked to code few basic algorithms questions. Do mention about small project if you have done related to web development.
If interviewer says if you want to ask any question, its always better to ask one or two question.
Tips: Prepare tell me something about yourself way before your placement starts, a month or so. Write it down on a piece of paper, keep it to less than 120 sec, 90-100 sec is good. 
A basic format would be like, your introduction, schooling (doesn't matter but if you have something good to say about), give an overview of your project/work experience mentioned in your CV.  
You should cover all the necessary and important parts written in your cv in this question. If something interest the interviewer your interview can start from those topic you mentioned.
Just make sure whatever you have written in your CV, you have full knowledge of it. Interviewer is going to take you from summary of the project to how you have actually coded some particular function or stored data.
Interviewer will give you enough time to think and give answer, so don't just be in hurry and say anything randomly.
While writing code keep telling what you are doing, just don't sit and code silently, interviewer might say and give hints if you are doing it wrong.
Ask question if you have any doubt, or to frame the question properly. Cause most of the time questions are of one line and you're suppose to assume a lot of things so its better to ask questions and get it clarified, it may happens that interviewer wants to ask something else and you are solving something else.
If you don't know something its better to say no.

General Tips: Interviewer wanna see how you think and if you can code or not, so take your time, think properly, keep telling what you are thinking, interviewer will probably gives hints/help you to solve the problem.
Skills: SQL, Algorithms, Data Strucutre, C++, PHP
College Name: IIT Kharagpur
Motivation: Interested in coding, love web development stuffs.

Skills evaluated in this interview

Baidu Interview FAQs

How many rounds are there in Baidu interview?
Baidu interview process usually has 3 rounds. The most common rounds in the Baidu interview process are Coding Test, HR and Resume Shortlist.

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Baidu Interview Process

based on 2 interviews

Interview experience

5
  
Excellent
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