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Aryaman Verma

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__lt__ dunder and cmp_to_key (tricks)
2-Way-Partitioning
Binary Search on Odd and Even range
Cyclic-sort-and-placement
Factorials and Inverse Factorials Calc.
Heap-Lazy-Deletion-(Decrease-Key)
KMP-string-matching
Merging-two-sorted-arrays

Notes

Extras
🌟 Overview
3-Way Partitioning (Dutch National Flag)
Arrays as Functional Graphs
Basic Array Problems
Basic Problems Using Simple Recursion
Binary Exponentiation with modulo
Binary Search on Answer ( Predicate Search) - 5⭐
Bucket Sort
Complementary Counting
Coordinate Compression
Cycle Sort (with duplicates)
Difference Array & Range Update Problems (FAANG Variations)
DSU - Disjoint Set Union
Fibonacci Numbers
Floyd's Cycle Detection & Duplicate Finding Algorithm (Tortoise and Hare)
Follow-Up questions on Two Odd Occurring XOR pattern
Further Optimized Prime Factorization (div. by 2 & 3)
Gray Code (1-bit difference)
Heaps Concept (Sorting , Operations etc.)
How to convert to 'Tail Recursive Procedures'
Huffman Coding
Intervals & Ranges Pattern (Sorting)
Intuition behind Josephus Problem
K-way Merge
Lookup Table Solution for counting set bits
Matrices Everywhere !!!
Maximum Subarray — Important Interview Variations
Merge Sort (Divide & Conquer) Strategies
Modulo Formulas
Monotonic Deque
Python Memory Model for DSA & Interviews
QuickSelect
Radix Sort
Row or Col compression in matrix
Sliding window variations
Strings Pattern Matching
Subarray with Given Sum — Important Interview Variations (Solutions)
Time complexity for GCD
Time complexity for Prime Factorization
Time Complexity for Sieve of Eratosthenes
Trie — Implementation
What makes a problem DP
XOR properties

Write-Ups

Anduril

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🔒 Anduril

ArraysStackStringsTwo Pointers

AMD

Accenture

Accolite

Adobe

Agoda

Airbnb

Airbus SE

Akamai

Altimetrik

Amazon

American Express

Apollo.io

Apple

Atlassian

Autodesk

Bank of America

Barclays

BlackRock

Bloomberg

ByteDance

Canonical

Capgemini

Capital One

Chewy

Cisco

Citadel

Citigroup

Cognizant

Comcast

Criteo

CrowdStrike

DE Shaw

Databricks

Delhivery

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DevRev

Devsinc

DoorDash

Dropbox

EPAM Systems

EY

Epic Systems

Expedia

Flipkart

FreshWorks

Garmin

GoDaddy

Goldman Sachs

Google

Grab

Grammarly

HCL

HP

HashedIn

Honeywell

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Nike

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Nvidia

Odoo

Ola Cabs

Optum

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Ozon

Palo Alto Networks

PayPal

Paytm

PhonePe

Publicis Sapient

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Roblox

Rokt

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Salesforce

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ServiceNow

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Spotify

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Tech Mahindra

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X

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Zenefits

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carwale

ciena

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jio

opentext

persistent systems

tcs

GFGLIFO

DefaultDifficulty (Easy → Hard)Difficulty (Hard → Easy)Title (A → Z)Title (Z → A)

Easy (2)

Two Sum (Leetcode 1)

Two Pointers, Arrays

Valid Parentheses (Leetcode 20)

Stack, Strings

Hard (1)

Postfix to Infix & Evaluation of Postfix (Leetcode 150)

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