Cnc Web World Java Developer Interview Questions and Answers

Q1. Coding question: Given a sorted array of numbers. All numbers have freq of 2 in array except one number. Find that number with T.C of logn
Ans. 
Find the single number in a sorted array with frequency of 2 for all other numbers.
• Use binary search to find the number with different frequency.

• Check if the mid element is at even or odd index to determine which side to search next.

• Example: Input array [1, 1, 2, 2, 3, 3, 4, 4, 5] should return 5.
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Q2. Print left view of tree
Ans. 
Print the left view of a tree by traversing the tree from left to right at each level
• Traverse the tree using level order traversal

• Print the first node at each level encountered during traversal
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Q1. Detailed discussion on projects
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Q2. Questions on O.S like about deadlocks,etc..
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Q1. C++ this pointer
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Q2. Python gil library questions asked
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Q1. DB Schema Design
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Q1. REST API, SQL and SOLID Principles
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Q1. Resume Based Round with Manager
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Q1. It was basically a salary negotiation round.
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It was a average test

Q1. Tell us about yoursefl
Ans. 
I am a passionate software developer with experience in Java, Python, and web development.
• Experienced in Java, Python, and web development

• Strong problem-solving skills

• Familiar with Agile methodologies

• Excellent communication skills

• Team player
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Q2. What you think what makes a team fail?
Ans. 
Lack of communication, poor leadership, conflicting goals, and lack of trust can make a team fail.
• Lack of communication: When team members do not communicate effectively, tasks can be misunderstood or not completed on time.

• Poor leadership: A team without a strong leader to guide and motivate them can easily lose direction and focus.

• Conflicting goals: If team members have different priorities or objectives, it can lead ...read more
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Q1. Basic questions for ADF
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Q1. Basic HR round for CTC and notice period
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