SAP Interview Questions, Process, and Tips

2 Programming questions

Q1. General DBMS , Current work, somewhat in-depth questions on existing work and challenges
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Q2. Coding question- Easy/medium. Just approach
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Q1. Some set of position releated questions like Java coding questions, threads, their states, SQL connectors, DS and their tradeoffs
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There were 2 easy level DSA questions in this round one of them was to give sum of alternate numbers in the array

Q1. Check whether string is palindrome or not
Ans. 
To check if a string is a palindrome, compare the string with its reverse.
• Create a function to reverse the input string.

• Compare the original string with the reversed string to check for palindrome.

• Example: 'madam' is a palindrome as it reads the same backward and forward.
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Q2. Reverse linked list
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Q3. Water jug problem
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Q4. Swap without using 3rd variable
Ans. 
To swap two variables without using a third variable
• Use arithmetic operations to swap values

• Example: a = a + b; b = a - b; a = a - b;
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It was technical round. used from basics to advance questions

Q1. What is wrapper class in java ,Explain Integer in it.
Ans. 
Wrapper classes in Java are classes that allow primitive data types to be accessed as objects. Integer is a wrapper class for the int data type.
• Wrapper classes in Java are used to convert primitive data types into objects.

• Integer is a wrapper class for the int data type, allowing integers to be treated as objects.

• Wrapper classes provide utility methods for converting between primitive data types and objects, as well as
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Q2. What is encapsulation explain in details.
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Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• It allows for better control over the data by preventing direct access from outside the class.

• Getters and setters are commonly used to access and modify the encapsulated data.

• Example: A class 'Car' encapsulating variables like 'm...read more
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Q3. What is polymorphism explain method overriding and overloading in details
Ans. 
Polymorphism in Java allows objects of different classes to be treated as objects of a common superclass. Method overriding involves a subclass providing a specific implementation of a method in its superclass, while method overloading involves having multiple methods with the same name but different parameters.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Method overr...read more
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Q4. What is MAP in java
Ans. 
MAP in Java is an interface that represents a mapping between keys and values.
• MAP is part of the Java Collections Framework.

• It allows you to store key-value pairs.

• Common implementations include HashMap, TreeMap, and LinkedHashMap.
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Q5. What are different annotations used in spring boot
Ans. 
Annotations used in Spring Boot for configuration and functionality
• 1. @SpringBootApplication - Main annotation to mark a class as Spring Boot application

• 2. @RestController - Annotation to define a class as a RESTful controller

• 3. @Autowired - Annotation to inject dependencies

• 4. @RequestMapping - Annotation to map web requests to specific handler methods

• 5. @Component - Annotation to mark a class as a Spring component
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Q6. Write program in java to add 5-6 numbers and count duplicates in it.
Ans. 
Java program to add numbers and count duplicates in an array.
• Create an array to store the numbers.

• Use a loop to add the numbers and count duplicates using a HashMap.

• Print the sum of numbers and count of duplicates.
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Q1. Collections in deep
Ans. 
Collections in Java are data structures that store and manipulate groups of objects.
• Collections framework in Java provides interfaces (List, Set, Map) and classes (ArrayList, LinkedList, HashSet, HashMap) for storing and manipulating collections of objects.

• Collections allow for easy manipulation of groups of objects, such as adding, removing, and searching for elements.

• Collections provide methods for sorting, iterating...read more
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Q2. Design pattern - signleton design pattern
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Q3. Java - 8 method interfaces and other features
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There were 2 coding qns

Q1. Qns on oops like pillars of oops, etc
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Q2. Coding qn-checking prime number
Ans. 
Checking if a number is prime by iterating up to its square root and checking for divisibility
• Iterate from 2 to square root of the number

• Check if the number is divisible by any number in the iteration range

• If divisible by any number, it is not prime
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Q1. Basic ml related questions,past project discussion
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Q1. AI, ML related, statistical analysis of the graph.
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Q1. Work culture, check
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Q1. Work culture, project discussion, scenario based questions
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Q1. Basic HR questions, why sap salary discussions
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