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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

Sigmoid

2 problems asked at Sigmoid.

Showing 2 of 2

🔒 Sigmoid

StackStrings

Accenture

Accolite

Adobe

Agoda

Airbnb

Altimetrik

Amazon

Anduril

Apple

Autodesk

Bank of America

Barclays

BlackRock

Bloomberg

ByteDance

Capital One

Chewy

Cisco

Citadel

Cognizant

Comcast

Criteo

CrowdStrike

DE Shaw

Dell

Deloitte

EPAM Systems

Epic Systems

Expedia

Flipkart

FreshWorks

GoDaddy

Goldman Sachs

Google

Grab

HCL

HP

Huawei

IBM

IMC

Informatica

Infosys

Intel

Intuit

Jane Street

LinkedIn

Lucid

Lyft

Mastercard

MathWorks

Meta

Microsoft

Millennium

Nike

Nokia

Nvidia

Odoo

Oracle

Ozon

Palo Alto Networks

PayPal

Paytm

PhonePe

Qualcomm

Roblox

Rokt

SAP

Salesforce

Samsung

ServiceNow

Siemens

Snap

Snowflake

Sony

Splunk

Spotify

Tesla

TikTok

Tinkoff

Toast

Tripadvisor

Turing

Two Sigma

UBS

USAA

Uber

UiPath

VK

Vimeo

Virtu Financial

Visa

Walmart Labs

Wells Fargo

Wipro

Wix

X

Yahoo

Yandex

ZS Associates

Zenefits

Zoho

carwale

eBay

opentext

persistent systems

tcs

GFGLIFO

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

Easy (1)

Valid Parentheses (Leetcode 20)

Stack, Strings

Medium (1)

Min Stack (Leetcode 155)

Stack

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