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Practice Problems Sheet
Depth-first-search
Binary Tree Maximum Path Sum
All Nodes Distance K In Binary Tree
Course Schedule Ii
Find Bottom Left Tree Value
Reorder Routes To Make All Paths Lead To The City Zero
Minimum Depth Of Binary Tree
Strange Printer
Path Sum Ii
Remove Invalid Parentheses
Tree Diameter
Construct Binary Tree From Preorder And Inorder Traversal
Recover Binary Search Tree
Reconstruct Itinerary
Binary Tree Paths
Binary Tree Right Side View
Sum Of Nodes With Even Valued Grandparent
Shopping Offers
Surrounded Regions
Balanced Binary Tree
Find Largest Value In Each Tree Row
Zuma Game
Lonely Pixel I
Remove Boxes
Cracking The Safe
Maximum Depth Of N Ary Tree
Count Good Nodes In Binary Tree
All Paths From Source Lead To Destination
Unknown
Maximum Difference Between Node And Ancestor
Nested List Weight Sum
01 Matrix
Out Of Boundary Paths
Convert Sorted Array To Binary Search Tree
Nested List Weight Sum Ii
Minesweeper
Recover A Tree From Preorder Traversal
Path Sum
Longest Increasing Path In A Matrix
Course Schedule
Clone Graph
Maximum Depth Of Binary Tree
Unknown
Freedom Trail
Sum Root To Leaf Numbers
Symmetric Tree
Binary Tree Coloring Game
Flatten Binary Tree To Linked List
Matchsticks To Square
Smallest String Starting From Leaf
Deepest Leaves Sum
Lowest Common Ancestor Of Deepest Leaves
Delete Nodes And Return Forest
Distribute Coins In Binary Tree
Binary Tree Level Order Traversal
Sum Of Distances In Tree
Populating Next Right Pointers In Each Node
Number Of Connected Components In An Undirected Graph
Minimum Time To Collect All Apples In A Tree
Convert Sorted List To Binary Search Tree
Increasing Order Search Tree
Pseudo Palindromic Paths In A Binary Tree
Number Of Islands
Construct Binary Tree From Inorder And Postorder Traversal
Leaf Similar Trees
Binary Tree Vertical Order Traversal
Populating Next Right Pointers In Each Node Ii
Binary Tree Cameras
Graph Valid Tree
Unknown
Flip Binary Tree To Match Preorder Traversal
Same Tree
Redundant Connection Ii
Maximum Product Of Splitted Binary Tree
Sorting
Quick Sort Partitioning Algorithm
Find Maximum Product Of Two Integers In An Array
Unknown
Sort An Array Containing Zeroes Ones and Twos In Linear Time
Sort a binary array in one iteration
Sort An Array according to number of set bits
Increasing Decreasing String
Unknown
How to find intersection of two arrays ?
Unknown
Move All Zeros present in the array to the end
Find Index of zero to be replaced to get maximum length of consecutive ones
Unknown
Check if a person can attend all meetings
Sliding-window
Sliding Window Maximum
Minimum Window Substring
Longest Substring With At Most Two Distinct Characters
Longest Substring Without Repeating Characters
Longest Substring With At Most K Distinct Characters
Find K Length Substrings With No Repeated Characters