C2L BIZ Full Stack Developer Interview Questions and Answers

Amazon pay customer service cnt number

Customer care number..

Q1. Calling" Amazon 091-53-56-47-89- Customer Care number to receive email from trustpilot about your reviews, inspection, tips about businesses and product, ...Calling" Amazon 09153.564.789 .Customer Care num...read more
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Q2. Amazon pay customer care number
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Round duration - 60 minutes
Round difficulty - Medium

11:05am – 12:05pm (IST). What are classes in javascript? how do you integrate js in html.

Q1. 
Longest Substring Without Repeating Characters Problem Statement
Given a string S of length L, determine the length of the longest substring that contains no repeating characters.
Example:
Input:
"abac...read more
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Q2. 
Print Nodes at Distance K from a Given Node
Given an arbitrary binary tree, a node of the tree, and an integer 'K', find all nodes that are at a distance K from the specified node, and return a list of th...read more
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Q3. 
Number of Islands Problem Statement
Given a non-empty grid of 0s and 1s, determine the number of distinct islands. An island is a collection of '1's (land) connected horizontally, vertically, or diagonall...read more
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Round duration - 60 minutes
Round difficulty - Medium

12:30pm – 1:30pm (IST). SQL questions What are Aggregate and Scalar functions? What is a Stored Procedure?

Q1. 
Next Greater Element Problem Statement
Given a list of integers of size N, your task is to determine the Next Greater Element (NGE) for every element. The Next Greater Element for an element X is the firs...read more
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Q2. 
Container with Most Water Problem Statement
Given a sequence of 'N' space-separated non-negative integers A[1], A[2], ..., A[i], ..., A[n], where each number in the sequence represents the height of a lin...read more
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Round duration - 60 minutes
Round difficulty - Easy

5pm – 6pm (IST)

Q1. It was lld question to design a cab booking system.
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Q2. Tell me about yourself
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Q1. Maximum Sum Subarray
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Q2. Insert node in binary search tree
Ans. 
To insert a node in a binary search tree, compare the value of the node to be inserted with the current node and traverse left or right accordingly.
• Start at the root node and compare the value of the node to be inserted with the current node.

• If the value is less than the current node, move to the left child node. If it is greater, move to the right child node.

• Repeat this process until reaching a leaf node, then insert ...read more
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DSA + JAVA + Spring boot

LLD (bookmyshow) + DSA

Q1. Implement an immutable class.
Ans. 
An immutable class is a class whose instances cannot be modified after creation.
• Use final keyword for class declaration to prevent inheritance

• Make all fields private and final to prevent modification

• Do not provide setter methods, only getter methods should be used
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Q2. Implement a springboot service that intercepts http requests.
Ans. 
Implement a Springboot service to intercept HTTP requests.
• Create a Springboot application with necessary dependencies.

• Implement a custom interceptor by extending HandlerInterceptorAdapter.

• Override preHandle and postHandle methods to intercept requests and responses.

• Register the interceptor in the WebMvcConfigurerAdapter configuration class.
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