Agoda Full Stack Software Developer Interview Questions and Answers

Hackerrank LeetCode 2 Hard questions and 1 medium

1. PEAK ELEMENT QUESTION.
2. COIN DENOMINATION

Q1. Rotate matrix by 90 degree
Ans. 
Rotate a matrix by 90 degrees.
• Transpose the matrix

• Reverse each row of the transposed matrix
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Q2. Longest substring with unique characters
Ans. 
The question asks for finding the longest substring in a given string that contains only unique characters.
• Iterate through the string and keep track of the current substring

• Use a set to check for duplicate characters

• Update the longest substring if a longer one is found
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Q1. A trie question
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Ecommerce hight level design

Q1. General DSA question leetcode style
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Q1. Discussion on previous project
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Q1. SQL hakcerank test, 10 questions 1 hour
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Q2. On sql mainly, with some python and Excel.
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Q1. Node JS internal
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Q2. Previous project discussion
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Q1. Map implementation
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Q2. Oops questions, exception handling
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Q1. Insert node in BST
Ans. 
Insert a node in a Binary Search Tree (BST)
• 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. If greater, move to the right child

• Repeat the process until reaching a leaf node, then insert the new node as a left or right child
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Q2. Design Lift system
Ans. 
Design a lift system for efficient vertical transportation
• Consider the number of floors in the building

• Include safety features like emergency stop button

• Optimize for speed and energy efficiency

• Implement a user-friendly interface for passengers
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