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Paypal Master DSA Sheet

This compilation contains exclusive, previously asked data structure and algorithm questions from real Paypal interviews. Focus on these core problem patterns to confidently tackle even the hardest interview challenges.

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Spiral Matrix
Asteroid Collision
Longest Substring Of All Vowels in Order
Zigzag Conversion6 Months
Valid Parentheses
Top K Frequent Words6 Months
Longest Substring Without Repeating Characters6 Months
Maximum Product Subarray
Serialize and Deserialize Binary Tree
Minimum Replacements to Sort the Array
Climbing Stairs
Search Suggestions System
Trapping Rain Water
Longest String Chain
Product of Array Except Self
Merge Intervals6 Months
Koko Eating Bananas
Maximum Profit in Job Scheduling
Smallest Greater Multiple Made of Two Digits
Random Pick with Weight
Rotate Image
Count the Number of Vowel Strings in Range
Count Vowel Strings in Ranges6 Months
Valid Sudoku
Pythagorean Distance Nodes in a Tree30 Days
Maximum Number of Integers to Choose From a Range II
Maximum Frequency Score of a Subarray
Minimum Non-Zero Product of the Array Elements
Maximum Number of Integers to Choose From a Range I
Paint House III
First Missing Positive
Find Words That Can Be Formed by Characters
Number of Valid Move Combinations On Chessboard
Maximum Sum Obtained of Any Permutation
Maximum Subarray
LFU Cache
Reaching Points
Move Zeroes
Remove K Digits
Insert Interval
Set Matrix Zeroes
Minimum Edge Reversals So Every Node Is Reachable6 Months
Container With Most Water6 Months
Count Array Pairs Divisible by K
Course Schedule
Palindromic Substrings
Search a 2D Matrix II
Find the Smallest Divisor Given a Threshold
Two Sum
Count Vowel Substrings of a String
Loud and Rich
Number of Islands
Word Search II
Minimum Increment to Make Array Unique
Time Needed to Rearrange a Binary String
Maximal Square
LRU Cache6 Months
Merge Sorted Array
Search in Rotated Sorted Array6 Months
Rotting Oranges
Average Selling Price6 Months
Minimum Absolute Difference30 Days
Valid Anagram
Median of Two Sorted Arrays
Word Search
Group Anagrams
Pairs of Songs With Total Durations Divisible by 60
Best Time to Buy and Sell Stock
Remove All Adjacent Duplicates in String II
3Sum
Jump Game
Top K Frequent Elements
Flatten Deeply Nested Array
Binary Tree Maximum Path Sum
Subarray Sum Equals K
Sort Colors
Minimum Number of Swaps to Make the String Balanced
Happy Number
Longest Consecutive Sequence
Last Stone Weight
Text Justification
Find Peak Element
Longest Increasing Subsequence3 Months
Find First and Last Position of Element in Sorted Array
Degree of an Array
House Robber
Smallest String With Swaps
Fizz Buzz
Divide Players Into Teams of Equal Skill
Number of Substrings Containing All Three Characters
Subsets
Maximum Number of Events That Can Be Attended
Minimum Number of Removals to Make Mountain Array
Coin Change
Kth Largest Element in an Array
Maximum Population Year
Missing Element in Sorted Array
Best Time to Buy and Sell Stock III
3Sum Smaller
Nearest Exit from Entrance in Maze
Find Median from Data Stream3 Months
Swap Nodes in Pairs
Merge In Between Linked Lists
Lexicographically Smallest Palindrome
Design Twitter
Meeting Scheduler