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Interview Questions

Real questions from top companies

700+ Easy450+ Medium650+ Hard
All CategoriesBehavioralSpark/Big DataSQLPython/CodingSystem Design/ArchitectureCloud/ToolsGeneral/Othereasymediumhard
401

Can you give an example of processing nested JSON data using these functions?

Python/Codingeasyspark2 min read
TCS
β†’
402

Coin Change Problem - minimum number of coins required to make change

Python/Codinghardoptimization2 min read
Walmart
β†’
403

Concatenating lists within a range using list comprehensions

Python/Codingeasy2 min read
Tiger Analytics
β†’
404

Convert a Binary Search Tree (BST) into a skewed tree in either increasing or decreasing order

Python/Codingeasy3 min read
JP Morgan
β†’
405

Convert a sorted array into a Binary Search Tree

Python/Codingeasy2 min read
McKinsey
β†’
406

Convert the list [1, [2, 3], 4, 5, 6, [7, 8, 9]] to a single list [1, 2, 3, 4, 5, 6, 7, 8, 9].

Python/Codingeasy2 min read
Cognizant
β†’
407

Count occurrences of elements in a list of tuples using Spark RDDs

Python/Codinghardoptimizationpartitionspark1 min read
Tiger Analytics
β†’
408

Count of Alphabets in String

Python/Codingeasy2 min read
LTIMindtree
β†’
409

Create a Python program to demonstrate the use of set operations (union, intersection).

Python/Codingmediumjoinpython2 min read
American Express
β†’
410

Create a dictionary with list elements as keys and their occurrences as values.

Python/Codingeasy2 min read
Gartner
β†’
411

Create a function to detect anomalies in sales trends using Pandas and NumPy.

Python/Codingeasy2 min read
Adidas
β†’
412

Create a script to parse and transform a JSON file into a structured CSV.

Python/Codingeasy2 min read
BCG
β†’
413

DSA: Array-based problem - brute-force and optimized solutions

Python/Codingeasy2 min read
media.net
β†’
414

Describe Spark's memory management model. How do you handle heap memory overhead issues?

Python/Codingmediumjoinpartitionspark2 min read
American Express
β†’
415

Describe script implementation and deployment.

Python/Codingeasy2 min read
Ford
β†’
416

Design a solution to generate unique device names from a list of IoT devices.

Python/Codinghardjoinoptimizationpartition3.6 min read
Expedia
β†’
417

Design an algorithm to merge k sorted lists of video streaming data.

Python/Codinghardjoinoptimizationpartition3.6 min read
Disney+ Hotstar
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418

Detect a loop in a singly linked list

Python/Codingeasy2 min read
McKinsey
β†’
419

Develop a Python script to clean data by removing duplicates and handling missing values.

Python/Codingeasypython2 min read
Fragma Data Systems
β†’
420

Difference between Stack vs Queue

Python/Codinghardpython2 min read
ZS Associates
β†’

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