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Tcs Master DSA Sheet

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

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Valid Parentheses6 Months
Convert Sorted List to Binary Search Tree
Min Stack
Subarray Product Less Than K
Longest Subarray of 1's After Deleting One Element
Second Highest Salary6 Months
Zigzag Conversion
Friday Purchases I
Reverse Linked List
Jump Game II
Majority Element II
Check If a Word Occurs As a Prefix of Any Word in a Sentence
Spiral Matrix6 Months
Koko Eating Bananas
Maximum Product Subarray
Managers with at Least 5 Direct Reports
Longest Substring Without Repeating Characters3 Months
Pow(x, n)6 Months
Trapping Rain Water
Next Permutation
Longest Palindromic Substring30 Days
Climbing Stairs
Serialize and Deserialize Binary Tree
Find K Closest Elements
Generate Parentheses
Diameter of Binary Tree
Merge Intervals
Unique Paths II
Largest Number
Regular Expression Matching
Valid Word
Remove All Occurrences of a Substring
Divisor Game
Task Scheduler3 Months
Sqrt(x)
Maximum Swap
First Missing Positive
Rotate Image
Middle of the Linked List
Permutation in String
Toeplitz Matrix
Pascal's Triangle
Container With Most Water
Burst Balloons6 Months
Bitwise ORs of Subarrays
LRU Cache
Set Matrix Zeroes
Move Zeroes3 Months
Maximum Number of Vowels in a Substring of Given Length
Non-overlapping Intervals
Linked List Cycle II
Merge Sorted Array
Rotting Oranges
Add Binary6 Months
Count the Digits That Divide a Number
Longest Common Subsequence
Combination Sum
Roman to Integer
Maximum Sum of Distinct Subarrays With Length K
Reverse Words in a String
Two Sum II - Input Array Is Sorted
Maximum Subarray6 Months
Contains Duplicate
Squares of a Sorted Array6 Months
Search in Rotated Sorted Array3 Months
Department Highest Salary
Two Sum6 Months
Single Element in a Sorted Array
Edit Distance
Count and Say
Longest Common Prefix6 Months
Find the Index of the First Occurrence in a String6 Months
Distribute Coins in Binary Tree
Maximum Ascending Subarray Sum
Group Anagrams
N-Queens
Subsets II
Letter Combinations of a Phone Number6 Months
Zigzag Grid Traversal With Skip
Binary Tree Maximum Path Sum
Merge Two Sorted Lists
Subarray Sum Equals K3 Months
Palindrome Partitioning IV
Reorder List
Recyclable and Low Fat Products
Sort Colors6 Months
3Sum Closest
Minimum Operations to Exceed Threshold Value I
Best Time to Buy and Sell Stock
Best Time to Buy and Sell Stock II
Word Search
Partition Equal Subset Sum
Maximal Rectangle
Largest Rectangle in Histogram
Valid Anagram3 Months
Palindrome Number3 Months
Jump Game
3Sum6 Months
Median of Two Sorted Arrays3 Months
Add Two Numbers3 Months
Integer to Roman
Minimum Operations to Exceed Threshold Value II
Merge k Sorted Lists
Minimum Cuts to Divide a Circle
Rotate Array3 Months
Fibonacci Number
Check If Array Pairs Are Divisible by k
Find the Duplicate Number
Majority Element6 Months
Valid Palindrome3 Months
Find All Duplicates in an Array
Reverse String6 Months
Sum of Unique Elements
Assign Cookies
Max Consecutive Ones6 Months
Remove Nth Node From End of List
Minimum Moves to Equal Array Elements II
Product Sales Analysis I
Delete the Middle Node of a Linked List
Next Greater Element I
Search in Rotated Sorted Array II
Unique Paths
Sliding Window Maximum
Project Employees I
Sort Array by Increasing Frequency
Find First and Last Position of Element in Sorted Array
Maximum Product of Three Numbers
Department Top Three Salaries
Delete Duplicate Emails
Power of Two
Intersection of Two Arrays II
First Unique Character in a String
Duplicate Emails
Convert a Number to Hexadecimal
Find Peak Element
Employee Bonus
K-diff Pairs in an Array
4Sum6 Months
Contains Duplicate II
Subsets
Tallest Billboard
Remove Duplicates from Sorted Array
How Many Numbers Are Smaller Than the Current Number
Sort an Array
Article Views I
Intersection of Two Arrays
Missing Number
Longest Palindromic Subsequence3 Months
Smallest Sufficient Team
Minimum Size Subarray Sum
Remove Element6 Months
Find Minimum in Rotated Sorted Array
Plus One
Matrix Diagonal Sum
Find Customer Referee
Integer to English Words
Odd Even Linked List
Number of Provinces
Search Insert Position
Happy Number
Number of Good Pairs
Ugly Number
Split Array With Same Average
Sort Characters By Frequency
Check if Array Is Sorted and Rotated
House Robber
Length of Last Word
String to Integer (atoi)6 Months
Find the Highest Altitude
Longest Consecutive Sequence
N-th Tribonacci Number
Minimum Cost to Make at Least One Valid Path in a Grid
Water Bottles
Fizz Buzz
Remove Letter To Equalize Frequency
Reverse Integer
Count Primes
Bulb Switcher
Peak Index in a Mountain Array
Longest Balanced Substring II
Smallest Integer Divisible by K6 Months
Create Hello World Function
The kth Factor of n
Find the Original Typed String I
Range Sum Query - Immutable
Count Number of Pairs With Absolute Difference K
Repeated Substring Pattern
Third Maximum Number
Single Number
Find Minimum Operations to Make All Elements Divisible by Three
Linked List Cycle
Teemo Attacking
Minimum Add to Make Parentheses Valid
Flipping an Image
Maximum Number of Events That Can Be Attended II
Running Sum of 1d Array
To Be Or Not To Be
Big Countries
Remove Duplicates from Sorted Array II
Rotate List
Binary Search
Return Length of Arguments Passed
Path with Maximum Probability
Replace Employee ID With The Unique Identifier
Two Best Non-Overlapping Events
Search a 2D Matrix
Maximum Average Subarray I
Binary Tree Inorder Traversal
String Compression III
Guess Number Higher or Lower
Factorial Trailing Zeroes
Employees Earning More Than Their Managers
Find Subsequence of Length K With the Largest Sum
Maximum Gap
Count the Number of Fair Pairs
Remove Duplicates from Sorted List
Maximum Nesting Depth of the Parentheses