https://leetcode.com/problems/split-a-string-into-the-max-number-of-unique-substrings/description/


Max count of unique split parts #medium #backtrack

https://leetcode.com/problems/kth-largest-sum-in-a-binary-tree/description/

`k`th largest level-sum in a tree #bfs #heap #quickselect

https://leetcode.com/problems/cousins-in-binary-tree-ii/description/


Replace Tree's values with cousines sum #medium #bfs

https://leetcode.com/problems/flip-equivalent-binary-trees/description/


Are trees flip-equal #medium #recursion #dfs

https://leetcode.com/problems/remove-sub-folders-from-the-filesystem/description/


Remove empty subfolders #medium #trie #sort

https://leetcode.com/problems/height-of-binary-tree-after-subtree-removal-queries/description/

n new heights by cutting nodes in a Tree #hard #dfs

somebody will receive this today

https://leetcode.com/problems/count-square-submatrices-with-all-ones/description/


Count 1-filled squares in 2D matrix #medium #dynamic_programming

https://leetcode.com/problems/longest-square-streak-in-an-array/description/


Longest quadratic subset #medium #hashmap #math

https://leetcode.com/problems/maximum-number-of-moves-in-a-grid/description/


Max increasing path from left to right in 2D matrix #medium #dynamic_programming

https://leetcode.com/problems/minimum-number-of-removals-to-make-mountain-array/description/


Min removes to make a mountain #hard #dynamic_programming #binary_search #lis

https://leetcode.com/problems/minimum-total-distance-traveled/description/


Min robots[x] travel to factories[x,capacity] #hard #dynamic_programming #sorting

https://leetcode.com/problems/delete-characters-to-make-fancy-string/description/


Filter 3+ repeating chars from string #easy

https://leetcode.com/problems/circular-sentence/description/


Are words circular? #easy

https://leetcode.com/problems/rotate-string/description/


Is string rotated goal? #easy #kmp #rolling-hash

https://leetcode.com/problems/string-compression-iii/description/



Compress repeating chars in string #medium #two_pointers

https://leetcode.com/problems/minimum-number-of-changes-to-make-binary-string-beautiful/description/


Min changes to make even-sized 0 and 1 #medium

https://leetcode.com/problems/find-if-array-can-be-sorted/description/


Can array be sorted by adjacent swap same-1-bits-nums #medium

https://leetcode.com/problems/largest-combination-with-bitwise-and-greater-than-zero/description/


Max positive AND-subset #medium #bit_manipulation

https://leetcode.com/problems/maximum-xor-for-each-query/description/


Running xor to make 2^k-1 #medium #bit_manipulation

https://leetcode.com/problems/minimum-array-end/description/


`n`th of increasing sequence with `AND[..]=x` #medium #bit_manipulation