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All Topics Algorithms Backend
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Title	Difficulty	Companies
Search Word in Root-to-Leaf Word Tree	Easy
Crossword Grid Validation	Easy	palantir
Ternary Search Tree Implementation	Easy	zillow
Lexicographically Smallest String with K-Position Moves	Easy	yahoo
Maximum Word Packing on Board	Easy	google
Closest pair of points	Easy	google
Count Pairs with Given Sum and XOR	Easy	jane-street
Minimize Maximum Mouse Distance to Holes	Easy	amazon
Find Peak in Rotated Sorted Array	Easy	sumologic
BST Floor and Ceiling	Easy	oracle
Election Voting Machine Monitor	Easy	uber
Pythagorean Triplet Detection	Easy	netflix
Huffman Tree Character Encoding	Easy	amazon
Transitive Closure of a Graph	Easy	microsoft
Egyptian Fraction	Easy	palantir
Symmetric N-ary Tree Detection	Easy	amazon
Find All Conflicting Appointments	Easy
Remove a vertex and all connected edges from a graph	Easy
Check If Digits Are Equal in String After Operations I	Easy
Count Partitions with Even Sum Difference	Easy
Find Closest Person	Easy
Find Followers Count	Easy
Find Most Frequent Vowel and Consonant	Easy
Find Products with Three Consecutive Digits	Easy
Find Products with Valid Serial Numbers	Easy
Find Special Substring of Length K	Easy
Find the Largest Almost Missing Integer	Easy
Find Valid Emails	Easy
Find Valid Pair of Adjacent Digits in String	Easy
Fruits Into Baskets II	Easy
Maximum Containers on a Ship	Easy
Maximum Product of Two Digits	Easy
Maximum Subarray With Equal Products	Easy
Maximum Unique Subarray Sum After Deletion	Easy
Minimum Cost to Reach Every Position	Easy
Minimum Deletions for At Most K Distinct Characters	Easy
Minimum Operations to Make Array Sum Divisible by K	Easy
Minimum Operations to Make Columns Strictly Increasing	Easy
Minimum Pair Removal to Sort Array I	Easy
Reverse Degree of a String	Easy
Smallest Index With Digit Sum Equal to Index	Easy
Smallest Number With All Set Bits	Easy
Substring Matching Pattern	Easy
Sum of Good Numbers	Easy
Sum of Variable Length Subarrays	Easy
Transform Array by Parity	Easy
Transformed Array	Easy
Unique 3-Digit Even Numbers	Easy
Zigzag Grid Traversal With Skip	Easy
Maximum Students on a Single Bench	Easy