Pie Infocomm Junior Engineer Interview Questions and Answers

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Q1. Difference between ArrayList and LinkedList
Ans. 
ArrayList is implemented using resizable array while LinkedList is implemented using doubly linked list.
• ArrayList provides fast random access but slow insertion and deletion at middle. LinkedList provides fast insertion and deletion but slow random access.

• ArrayList uses less memory overhead compared to LinkedList.

• Example: ArrayList is suitable for scenarios where frequent access and less frequent insertion/deletion is ...read more
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Print the tringle pattern and write the only logic

Q1. Prepare questions related networking,database,cloud and prepare even for core subjects during your BTech
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Q1. Introduction about your self and project done during BTech and wiling to relocate.
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Q1. It's all base on our communication. We need to speak English fluently
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It's some little bit difficult and there is no coding round

Q1. It's more difficult this round and they asked about based on c I told them I am comfortable in c
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Q2. Arrays, dangling pointer, pointers,oops concepts
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Q1. Changing direct sentence into indirect sentence
Ans. 
Convert direct sentence to indirect sentence and provide descriptive answer.
• Change the pronouns and verb tenses to match the new subject

• Use reporting verbs like 'said', 'asked', 'told', etc.

• Add any necessary conjunctions or prepositions

• Example: Direct - She said, 'I am going to the store.' Indirect - She said that she was going to the store.'
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Time and work, simple interest

Q1. What is array,list, explain about oops concepts
Ans. 
Array and list are data structures used to store multiple values. OOPs concepts include encapsulation, inheritance, and polymorphism.
• Array is a collection of similar data types, accessed using an index. Example: int[] numbers = {1, 2, 3};

• List is a collection of objects, accessed using methods. Example: List names = new ArrayList<>();

• Encapsulation is the practice of hiding implementation details and exposing only necess...read more
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Coding questions related java and some questions related java, spring boot

Q1. What is hashmap
Ans. 
HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap is part of the Java Collections framework.

• It uses hashing to store key-value pairs in an array.

• Example: HashMap map = new HashMap<>(); map.put("key1", 1); int value = map.get("key1");
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Q2. Multi threading,
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