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LLD for the following scenarios : Design Amazon e-commerce site. Design Snake Ladder Game. Programming questions : Number of possible ways to get a sum from list of numbers. Number of ways to reach a step with a list of individual steps. Make insert, delete and query operations in O(1).
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Software Engineer -2

Interviewed at OYO

3.3★
Nov 23, 2019

LLD for the following scenarios : Design Amazon e-commerce site. Design Snake Ladder Game. Programming questions : Number of possible ways to get a sum from list of numbers. Number of ways to reach a step with a list of individual steps. Make insert, delete and query operations in O(1).

Round 1 : BookMyShow LLD discussion, Coding question, questions related to cs fundamentals and 1 language (java) Round 2 : Vending Machine LLD discussion Coding question - Design a data structure - getMin and getMax : Most Used Function deleteMin and deleteMax: Moderately Used Insert or delete. Least used.
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SDE-2

Interviewed at OYO

3.3★
May 3, 2021

Round 1 : BookMyShow LLD discussion, Coding question, questions related to cs fundamentals and 1 language (java) Round 2 : Vending Machine LLD discussion Coding question - Design a data structure - getMin and getMax : Most Used Function deleteMin and deleteMax: Moderately Used Insert or delete. Least used.

2️⃣ Count Subarrays With All Distinct Elements Problem Given an array, count the number of subarrays whose number of distinct elements is equal to the total number of unique elements in the entire array. Key Concepts Sliding Window Frequency map Two pointers Exactly K distinct elements
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SDE-2 Backend

Interviewed at Innovaccer

2.9★
Feb 28, 2026

2️⃣ Count Subarrays With All Distinct Elements Problem Given an array, count the number of subarrays whose number of distinct elements is equal to the total number of unique elements in the entire array. Key Concepts Sliding Window Frequency map Two pointers Exactly K distinct elements

1️⃣ Symmetric (Mirror) Binary Tree Problem Given the root of a binary tree, check whether it is a mirror of itself (i.e., symmetric around its center). Key Concepts DFS / BFS Mirror comparison Tree recursion Queue-based traversal
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SDE-2 Backend

Interviewed at Innovaccer

2.9★
Feb 28, 2026

1️⃣ Symmetric (Mirror) Binary Tree Problem Given the root of a binary tree, check whether it is a mirror of itself (i.e., symmetric around its center). Key Concepts DFS / BFS Mirror comparison Tree recursion Queue-based traversal

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