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tcs SDE 1

The 253 highest-frequency questions from all time. Finish the strongest signals first.

Updated weekly · Latest source check: 13 Oct 2026ⓘLatest successful check of the sources used by this company. A check does not necessarily mean the questions changed.

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Top questions 253

Done	Question	LeetCode
Mark Friday Purchases I completed	Friday Purchases I	Solve
Mark Two Sum completed	Two Sum	Solve
Mark Longest Palindromic Substring completed	Longest Palindromic Substring	Solve
Mark Palindrome Number completed	Palindrome Number	Solve
Mark Maximum Subarray completed	Maximum Subarray	Solve
Mark Container With Most Water completed	Container With Most Water	Solve
Mark Move Zeroes completed	Move Zeroes	Solve
Mark Best Time to Buy and Sell Stock completed	Best Time to Buy and Sell Stock	Solve
Mark Longest Common Prefix completed	Longest Common Prefix	Solve
Mark Rank Transform of an Array completed	Rank Transform of an Array	Solve
Mark Majority Element completed	Majority Element	Solve
Mark Second Highest Salary completed	Second Highest Salary	Solve
Mark Valid Anagram completed	Valid Anagram	Solve
Mark 3Sum completed	3Sum	Solve
Mark First Missing Positive completed	First Missing Positive	Solve
Mark Longest Substring Without Repeating Characters completed	Longest Substring Without Repeating Characters	Solve
Mark Roman to Integer completed	Roman to Integer	Solve
Mark Valid Parentheses completed	Valid Parentheses	Solve
Mark Fibonacci Number completed	Fibonacci Number	Solve
Mark Find the Index of the First Occurrence in a String completed	Find the Index of the First Occurrence in a String	Solve
Mark Reverse String completed	Reverse String	Solve
Mark Single Number completed	Single Number	Solve
Mark Sort Colors completed	Sort Colors	Solve
Mark Integer to Roman completed	Integer to Roman	Solve
Mark Remove Duplicates from Sorted Array completed	Remove Duplicates from Sorted Array	Solve
Mark Median of Two Sorted Arrays completed	Median of Two Sorted Arrays	Solve
Mark Merge Sorted Array completed	Merge Sorted Array	Solve
Mark Reverse Integer completed	Reverse Integer	Solve
Mark Contains Duplicate completed	Contains Duplicate	Solve
Mark Jump Game completed	Jump Game	Solve
Mark Rotate Array completed	Rotate Array	Solve
Mark Spiral Matrix completed	Spiral Matrix	Solve
Mark Subarray Sum Equals K completed	Subarray Sum Equals K	Solve
Mark Valid Palindrome completed	Valid Palindrome	Solve
Mark Check if Array Is Sorted and Rotated completed	Check if Array Is Sorted and Rotated	Solve
Mark Maximum Product Subarray completed	Maximum Product Subarray	Solve
Mark Contains Duplicate II completed	Contains Duplicate II	Solve
Mark First Unique Character in a String completed	First Unique Character in a String	Solve
Mark Group Anagrams completed	Group Anagrams	Solve
Mark Pow(x, n) completed	Pow(x, n)	Solve
Mark Task Scheduler completed	Task Scheduler	Solve
Mark Zigzag Grid Traversal With Skip completed	Zigzag Grid Traversal With Skip	Solve
Mark Climbing Stairs completed	Climbing Stairs	Solve
Mark Count the Digits That Divide a Number completed	Count the Digits That Divide a Number	Solve
Mark Maximum Ascending Subarray Sum completed	Maximum Ascending Subarray Sum	Solve
Mark Maximum Product of Three Numbers completed	Maximum Product of Three Numbers	Solve
Mark Remove Letter To Equalize Frequency completed	Remove Letter To Equalize Frequency	Solve
Mark Trapping Rain Water completed	Trapping Rain Water	Solve
Mark Find First and Last Position of Element in Sorted Array completed	Find First and Last Position of Element in Sorted Array	Solve
Mark Largest Rectangle in Histogram completed	Largest Rectangle in Histogram	Solve
Mark Minimum Cuts to Divide a Circle completed	Minimum Cuts to Divide a Circle	Solve
Mark Minimum Operations to Exceed Threshold Value I completed	Minimum Operations to Exceed Threshold Value I	Solve
Mark Minimum Operations to Exceed Threshold Value II completed	Minimum Operations to Exceed Threshold Value II	Solve
Mark Palindrome Partitioning IV completed	Palindrome Partitioning IV	Solve
Mark Search in Rotated Sorted Array completed	Search in Rotated Sorted Array	Solve
Mark Add Binary completed	Add Binary	Solve
Mark Bitwise ORs of Subarrays completed	Bitwise ORs of Subarrays	Solve
Mark Longest Consecutive Sequence completed	Longest Consecutive Sequence	Solve
Mark Maximum Average Subarray I completed	Maximum Average Subarray I	Solve
Mark Merge Intervals completed	Merge Intervals	Solve
Mark Peak Index in a Mountain Array completed	Peak Index in a Mountain Array	Solve
Mark Plus One completed	Plus One	Solve
Mark Set Matrix Zeroes completed	Set Matrix Zeroes	Solve
Mark Sqrt(x) completed	Sqrt(x)	Solve
Mark 4Sum completed	4Sum	Solve
Mark Add Two Numbers completed	Add Two Numbers	Solve
Mark Burst Balloons completed	Burst Balloons	Solve
Mark Count Number of Pairs With Absolute Difference K completed	Count Number of Pairs With Absolute Difference K	Solve
Mark Duplicate Emails completed	Duplicate Emails	Solve
Mark Employees Earning More Than Their Managers completed	Employees Earning More Than Their Managers	Solve
Mark House Robber completed	House Robber	Solve
Mark Kth Smallest Element in a BST completed	Kth Smallest Element in a BST	Solve
Mark Length of Last Word completed	Length of Last Word	Solve
Mark Letter Combinations of a Phone Number completed	Letter Combinations of a Phone Number	Solve
Mark Missing Number completed	Missing Number	Solve
Mark Search Insert Position completed	Search Insert Position	Solve
Mark Single Element in a Sorted Array completed	Single Element in a Sorted Array	Solve
Mark Smallest Sufficient Team completed	Smallest Sufficient Team	Solve
Mark Sort an Array completed	Sort an Array	Solve
Mark Split Array With Same Average completed	Split Array With Same Average	Solve
Mark Squares of a Sorted Array completed	Squares of a Sorted Array	Solve
Mark Toeplitz Matrix completed	Toeplitz Matrix	Solve
Mark Two Sum II - Input Array Is Sorted completed	Two Sum II - Input Array Is Sorted	Solve
Mark Unique Paths completed	Unique Paths	Solve
Mark Count Primes completed	Count Primes	Solve
Mark Happy Number completed	Happy Number	Solve
Mark Middle of the Linked List completed	Middle of the Linked List	Solve
Mark Min Stack completed	Min Stack	Solve
Mark Next Permutation completed	Next Permutation	Solve
Mark Pascal's Triangle completed	Pascal's Triangle	Solve
Mark Product of Array Except Self completed	Product of Array Except Self	Solve
Mark Product Sales Analysis I completed	Product Sales Analysis I	Solve
Mark Remove Nth Node From End of List completed	Remove Nth Node From End of List	Solve
Mark Reverse Linked List completed	Reverse Linked List	Solve
Mark Sliding Window Maximum completed	Sliding Window Maximum	Solve
Mark Diameter of Binary Tree completed	Diameter of Binary Tree	Solve
Mark Find Minimum in Rotated Sorted Array completed	Find Minimum in Rotated Sorted Array	Solve
Mark Find Peak Element completed	Find Peak Element	Solve
Mark Find the Duplicate Number completed	Find the Duplicate Number	Solve
Mark Generate Parentheses completed	Generate Parentheses	Solve
Mark Koko Eating Bananas completed	Koko Eating Bananas	Solve
Mark Longest Increasing Subsequence completed	Longest Increasing Subsequence	Solve
Mark Longest Palindromic Subsequence completed	Longest Palindromic Subsequence	Solve
Mark Max Consecutive Ones completed	Max Consecutive Ones	Solve
Mark Merge k Sorted Lists completed	Merge k Sorted Lists	Solve
Mark N-Queens completed	N-Queens	Solve
Mark Palindrome Linked List completed	Palindrome Linked List	Solve
Mark Partition Equal Subset Sum completed	Partition Equal Subset Sum	Solve
Mark Permutation in String completed	Permutation in String	Solve
Mark Remove Duplicates from Sorted List completed	Remove Duplicates from Sorted List	Solve
Mark Running Sum of 1d Array completed	Running Sum of 1d Array	Solve
Mark Search in Rotated Sorted Array II completed	Search in Rotated Sorted Array II	Solve
Mark Serialize and Deserialize Binary Tree completed	Serialize and Deserialize Binary Tree	Solve
Mark String to Integer (atoi) completed	String to Integer (atoi)	Solve
Mark Subsets completed	Subsets	Solve
Mark Subsets II completed	Subsets II	Solve
Mark Tallest Billboard completed	Tallest Billboard	Solve
Mark Article Views I completed	Article Views I	Solve
Mark Assign Cookies completed	Assign Cookies	Solve
Mark Best Time to Buy and Sell Stock II completed	Best Time to Buy and Sell Stock II	Solve
Mark Combine Two Tables completed	Combine Two Tables	Solve
Mark Consecutive Numbers completed	Consecutive Numbers	Solve
Mark Customer Who Visited but Did Not Make Any Transactions completed	Customer Who Visited but Did Not Make Any Transactions	Solve
Mark Daily Temperatures completed	Daily Temperatures	Solve
Mark Decode String completed	Decode String	Solve
Mark Delete Duplicate Emails completed	Delete Duplicate Emails	Solve
Mark Delete the Middle Node of a Linked List completed	Delete the Middle Node of a Linked List	Solve
Mark Find Missing Elements completed	Find Missing Elements	Solve
Mark Find Pivot Index completed	Find Pivot Index	Solve
Mark Find Subsequence of Length K With the Largest Sum completed	Find Subsequence of Length K With the Largest Sum	Solve
Mark Find the Peaks completed	Find the Peaks	Solve
Mark Fizz Buzz completed	Fizz Buzz	Solve
Mark Jump Game II completed	Jump Game II	Solve
Mark K-diff Pairs in an Array completed	K-diff Pairs in an Array	Solve
Mark Lemonade Change completed	Lemonade Change	Solve
Mark Longest Subarray of 1's After Deleting One Element completed	Longest Subarray of 1's After Deleting One Element	Solve
Mark LRU Cache completed	LRU Cache	Solve
Mark Managers with at Least 5 Direct Reports completed	Managers with at Least 5 Direct Reports	Solve
Mark Maximum Total Subarray Value I completed	Maximum Total Subarray Value I	Solve
Mark Minimum Depth of Binary Tree completed	Minimum Depth of Binary Tree	Solve
Mark Minimum Moves to Equal Array Elements II completed	Minimum Moves to Equal Array Elements II	Solve
Mark Next Greater Element I completed	Next Greater Element I	Solve
Mark Non-overlapping Intervals completed	Non-overlapping Intervals	Solve
Mark Number of Islands completed	Number of Islands	Solve
Mark Permutations completed	Permutations	Solve
Mark Range Sum Query - Immutable completed	Range Sum Query - Immutable	Solve
Mark Remove Element completed	Remove Element	Solve
Mark Reorder List completed	Reorder List	Solve
Mark Reverse Words in a String completed	Reverse Words in a String	Solve
Mark Same Tree completed	Same Tree	Solve
Mark Search a 2D Matrix completed	Search a 2D Matrix	Solve
Mark String Compression completed	String Compression	Solve
Mark Third Maximum Number completed	Third Maximum Number	Solve
Mark Top K Frequent Elements completed	Top K Frequent Elements	Solve
Mark Ugly Number completed	Ugly Number	Solve
Mark 3Sum Closest completed	3Sum Closest	Solve
Mark Asteroid Collision completed	Asteroid Collision	Solve
Mark Binary Search completed	Binary Search	Solve
Mark Binary Tree Inorder Traversal completed	Binary Tree Inorder Traversal	Solve
Mark Binary Tree Maximum Path Sum completed	Binary Tree Maximum Path Sum	Solve
Mark Boats to Save People completed	Boats to Save People	Solve
Mark Bulb Switcher completed	Bulb Switcher	Solve
Mark Check If Array Pairs Are Divisible by k completed	Check If Array Pairs Are Divisible by k	Solve
Mark Contiguous Array completed	Contiguous Array	Solve
Mark Continuous Subarray Sum completed	Continuous Subarray Sum	Solve
Mark Convert Sorted List to Binary Search Tree completed	Convert Sorted List to Binary Search Tree	Solve
Mark Count and Say completed	Count and Say	Solve
Mark Count Odd Numbers in an Interval Range completed	Count Odd Numbers in an Interval Range	Solve
Mark Count the Number of Fair Pairs completed	Count the Number of Fair Pairs	Solve
Mark Create Hello World Function completed	Create Hello World Function	Solve
Mark Department Highest Salary completed	Department Highest Salary	Solve
Mark Divisor Game completed	Divisor Game	Solve
Mark Employee Bonus completed	Employee Bonus	Solve
Mark Factorial Trailing Zeroes completed	Factorial Trailing Zeroes	Solve
Mark Find All Duplicates in an Array completed	Find All Duplicates in an Array	Solve
Mark Find All Numbers Disappeared in an Array completed	Find All Numbers Disappeared in an Array	Solve
Mark Find Numbers with Even Number of Digits completed	Find Numbers with Even Number of Digits	Solve
Mark Find Smallest Letter Greater Than Target completed	Find Smallest Letter Greater Than Target	Solve
Mark Find the Original Typed String I completed	Find the Original Typed String I	Solve
Mark Find the Winner of the Circular Game completed	Find the Winner of the Circular Game	Solve
Mark Flood Fill completed	Flood Fill	Solve
Mark Fruit Into Baskets completed	Fruit Into Baskets	Solve
Mark Gas Station completed	Gas Station	Solve
Mark GCD of Odd and Even Sums completed	GCD of Odd and Even Sums	Solve
Mark Guess Number Higher or Lower completed	Guess Number Higher or Lower	Solve
Mark How Many Numbers Are Smaller Than the Current Number completed	How Many Numbers Are Smaller Than the Current Number	Solve
Mark Insert Interval completed	Insert Interval	Solve
Mark Integer to English Words completed	Integer to English Words	Solve
Mark Intersection of Two Arrays II completed	Intersection of Two Arrays II	Solve
Mark Intersection of Two Linked Lists completed	Intersection of Two Linked Lists	Solve
Mark Isomorphic Strings completed	Isomorphic Strings	Solve
Mark Kth Largest Element in an Array completed	Kth Largest Element in an Array	Solve
Mark Largest Number completed	Largest Number	Solve
Mark Linked List Cycle completed	Linked List Cycle	Solve
Mark Linked List Cycle II completed	Linked List Cycle II	Solve
Mark Longest Balanced Substring II completed	Longest Balanced Substring II	Solve
Mark Longest Common Subsequence completed	Longest Common Subsequence	Solve
Mark Longest Palindrome completed	Longest Palindrome	Solve
Mark Majority Element II completed	Majority Element II	Solve
Mark Max Number of K-Sum Pairs completed	Max Number of K-Sum Pairs	Solve
Mark Maximal Rectangle completed	Maximal Rectangle	Solve
Mark Maximum Depth of Binary Tree completed	Maximum Depth of Binary Tree	Solve
Mark Maximum Gap completed	Maximum Gap	Solve
Mark Maximum Ice Cream Bars completed	Maximum Ice Cream Bars	Solve
Mark Maximum Nesting Depth of the Parentheses completed	Maximum Nesting Depth of the Parentheses	Solve
Mark Maximum Number of Events That Can Be Attended II completed	Maximum Number of Events That Can Be Attended II	Solve
Mark Maximum Number of Vowels in a Substring of Given Length completed	Maximum Number of Vowels in a Substring of Given Length	Solve
Mark Maximum Product of Two Elements in an Array completed	Maximum Product of Two Elements in an Array	Solve
Mark Maximum Sum of Distinct Subarrays With Length K completed	Maximum Sum of Distinct Subarrays With Length K	Solve
Mark Merge Two Sorted Lists completed	Merge Two Sorted Lists	Solve
Mark Min Cost Climbing Stairs completed	Min Cost Climbing Stairs	Solve
Mark Minimum Number of Operations to Make Array Continuous completed	Minimum Number of Operations to Make Array Continuous	Solve
Mark Minimum Number of Operations to Reinitialize a Permutation completed	Minimum Number of Operations to Reinitialize a Permutation	Solve
Mark Minimum Size Subarray Sum completed	Minimum Size Subarray Sum	Solve
Mark Next Greater Element II completed	Next Greater Element II	Solve
Mark Nim Game completed	Nim Game	Solve
Mark Nth Highest Salary completed	Nth Highest Salary	Solve
Mark Odd Even Linked List completed	Odd Even Linked List	Solve
Mark Online Stock Span completed	Online Stock Span	Solve
Mark Power of Two completed	Power of Two	Solve
Mark Project Employees I completed	Project Employees I	Solve
Mark Ransom Note completed	Ransom Note	Solve
Mark Recyclable and Low Fat Products completed	Recyclable and Low Fat Products	Solve
Mark Reducing Dishes completed	Reducing Dishes	Solve
Mark Regular Expression Matching completed	Regular Expression Matching	Solve
Mark Remove All Occurrences of a Substring completed	Remove All Occurrences of a Substring	Solve
Mark Remove Linked List Elements completed	Remove Linked List Elements	Solve
Mark Remove Outermost Parentheses completed	Remove Outermost Parentheses	Solve
Mark Repeated Substring Pattern completed	Repeated Substring Pattern	Solve
Mark Replace Employee ID With The Unique Identifier completed	Replace Employee ID With The Unique Identifier	Solve
Mark Reshape the Matrix completed	Reshape the Matrix	Solve
Mark Return Length of Arguments Passed completed	Return Length of Arguments Passed	Solve
Mark Reverse Nodes in k-Group completed	Reverse Nodes in k-Group	Solve
Mark Rotate Image completed	Rotate Image	Solve
Mark Rotate String completed	Rotate String	Solve
Mark Rotting Oranges completed	Rotting Oranges	Solve
Mark Search in a Binary Search Tree completed	Search in a Binary Search Tree	Solve
Mark Set Mismatch completed	Set Mismatch	Solve
Mark Smallest Integer Divisible by K completed	Smallest Integer Divisible by K	Solve
Mark Smallest Range Covering Elements from K Lists completed	Smallest Range Covering Elements from K Lists	Solve
Mark Sort Array By Parity completed	Sort Array By Parity	Solve
Mark Spiral Matrix II completed	Spiral Matrix II	Solve
Mark Subarray Product Less Than K completed	Subarray Product Less Than K	Solve
Mark Subtract the Product and Sum of Digits of an Integer completed	Subtract the Product and Sum of Digits of an Integer	Solve
Mark Subtree of Another Tree completed	Subtree of Another Tree	Solve
Mark Swap Nodes in Pairs completed	Swap Nodes in Pairs	Solve
Mark Teemo Attacking completed	Teemo Attacking	Solve
Mark Top K Frequent Words completed	Top K Frequent Words	Solve
Mark Valid Word completed	Valid Word	Solve
Mark Vertical Order Traversal of a Binary Tree completed	Vertical Order Traversal of a Binary Tree	Solve
Mark Water Bottles completed	Water Bottles	Solve
Mark Word Ladder completed	Word Ladder	Solve
Mark Zigzag Conversion completed	Zigzag Conversion	Solve