NeoSOFT Interview Questions, Process, and Tips

Q1. Javascript basics
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Q2. Javascript advanced
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Q1. What are the differences between an ArrayList and a LinkedList?
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ArrayList is implemented as a resizable array, while LinkedList is implemented as a doubly linked list.
• ArrayList provides fast random access and slower insertion/deletion, while LinkedList provides fast insertion/deletion and slower random access.

• ArrayList uses less memory overhead compared to LinkedList.

• Example: ArrayList is more suitable for scenarios where frequent access and traversal of elements is required, while...read more
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Q1. == operation & .equals() method method overloading
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The == operator is used to compare references in Java, while the .equals() method is used to compare values. Method overloading is when multiple methods have the same name but different parameters.
• Use == to compare references, use .equals() to compare values

• Method overloading allows multiple methods with the same name but different parameters

• Example: String str1 = new String("hello"); String str2 = new String("hello");...read more
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Q2. Linked list working with example
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A linked list is a data structure where each element points to the next element in the list.
• Linked list is made up of nodes, each containing data and a reference to the next node.

• Insertion and deletion are efficient in linked lists compared to arrays.

• Example: Node 1 -> Node 2 -> Node 3 -> null
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Q1. Hashmap and Cocurrenthashmap difference
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HashMap is not thread-safe, while ConcurrentHashMap is thread-safe.
• HashMap is not synchronized and not thread-safe, while ConcurrentHashMap is thread-safe.

• ConcurrentHashMap allows concurrent modifications without causing any ConcurrentModificationException.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, each with its own lock.
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Q1. What is event loop
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Asked me to build an entire application in 30 min when he himself joined the meeting 15 mins late

Q1. Oops concepts JavaScript related
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Q1. Project related technologies used
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Used technologies include Java, Spring Boot, Angular, and MySQL.
• Java

• Spring Boot

• Angular

• MySQL
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