SAP Labs interview experience Real time questions & tips from candidates to crack your interview
Developer Associate
SAP Labs
3 rounds | 5 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 3 months
Topics: Data Structures, Java, JavaScript, Database Management, Algorithms
Tip 1 : Solve a lot of questions(mostly medium level)
Tip 2 : Prepare for questions which can be asked on your projects
Tip 3 : Prepare for questions which can be asked o your current experience
Application process
Where: Referral
Eligibility: No creiteria
Tip 1 : Know every technology/project you mention in resume
Tip 2 : Use a good format which is easy to read
Interview rounds
01
Round
Medium
Video Call
Duration60 mins
Interview date16 May 2022
Coding problem2
1. Trapping Rain Water
Moderate
15m average time
80% success
0/80
Asked in companies
You have been given a long type array/list 'arr’ of size 'n’.
It represents an elevation map wherein 'arr[i]’ denotes the elevation of the 'ith' bar.
Print the total amount of rainwater that can be trapped in these elevations.
Note :
The width of each bar is the same and is equal to 1.
Example:
Input: ‘n’ = 6, ‘arr’ = [3, 0, 0, 2, 0, 4].
Output: 10
Explanation: Refer to the image for better comprehension:
Note :
You don't need to print anything. It has already been taken care of. Just implement the given function.
Problem approach
Firstly gave brute force solution, traverse the array and for each element, find the highest elevation on left and right of that element. Take smaller of that and find its difference with current height. This much water will be stored at that element. Similarly, calculate for all and sum it.
Then optimized this solution by pre-calculating the highest elevation on left and right and storing in left[] and right[] array. Then iterate through array and use pre-calculated values. Stored water = min(left[i], right[i])- A[i]. If the answer is less than 0, then use it as 0.
2. Most Frequent Element
Easy
0/40
Asked in companies
Given an alphabetical string ‘S’. Return the most frequent character of ‘S’. If there are multiple characters with the same frequency equal to the maximal frequency, return the lexicographically smallest character with maximal frequency.
For example:
‘S’ = brutegroot
The most frequent characters are [o, r, t]. All of these characters appear 2 times each.
As among all the options, ‘o’ is lexicographically smallest. So the answer is ‘o’.
Hence output will be o.
Problem approach
First provided brute force solution of using 2 for loops. First loop iterates through array and for each element, inner loop again iterates array and find the frequency. Then it compares it with maximum frequency so far stored in another variable.
Then optimized the solution by using hash map. Iterate through array and increase count of each element. Then iterate through hash map and return key with max value.
02
Round
Medium
Video Call
Duration60 mins
Interview date18 May 2022
Coding problem2
1. System Design Question
Design Wending Machine.
Problem approach
Tip 1: Ask questions so that interviewer describes problem in detail
Tip 2: Write pseudocode
Tip 3: Perform error handling
2. DBMS based questions
SQL queries on an employee database.
Find second highest salary
Find employees who are working in more than 1 project
Problem approach
Tip 1 : Practice all SQL operations like Joins, subqueries etc
03
Round
Medium
Video Call
Duration40 mins
Interview date23 May 2022
Coding problem1
Managerial round.
A few questions on Operating system were asked. Then some basic questions regarding cloud(because I have a AWS certification which I mentioned in resume). Questions on current experience and why looking to change.
1. OS based questions
What is a program?
What is a process?
What is a thread?
How is scheduling performed?
What is Round Robin?
Problem approach
Tip 1 : Revise basic OS concepts
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
What is recursion?
Choose another skill to practice
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