https://leetcode.com/problems/counting-words-with-a-given-prefix/description/


Count words with prefix #easy

https://leetcode.com/problems/word-subsets/description/



Words containing all chars of words2 #medium

https://leetcode.com/problems/construct-k-palindrome-strings/description/

Can make k palindromes from string? #medium

https://leetcode.com/problems/check-if-a-parentheses-string-can-be-valid/description/


Balance parenthesis with wildcards #medium

https://leetcode.com/problems/minimum-length-of-string-after-operations/description/


Length after removing repeatings > 2 #medium

https://leetcode.com/problems/find-the-prefix-common-array-of-two-arrays/description/


A[..i] and B[..i] intersections sizes #medium #counting

https://leetcode.com/problems/minimize-xor/description/

Min xor with num1, bits count of num2 #medium

https://leetcode.com/problems/bitwise-xor-of-all-pairings/description/


Xor of all pairs xors #medium #xor

https://leetcode.com/problems/neighboring-bitwise-xor/description/

Can restore next-sibl-xored array? #medium #xor

https://leetcode.com/problems/minimum-cost-to-make-at-least-one-valid-path-in-a-grid/description/


Min undirected jumps to reach the end in grid #hard #bfs

https://leetcode.com/problems/trapping-rain-water-ii/description/


Trap the water in 2D height matrix #hard #bfs

https://leetcode.com/problems/first-completely-painted-row-or-column/description/


Index of first filled row/column in 2D matrix #medium #counting

https://leetcode.com/problems/grid-game/description/


Maximum of minimized paths #medium #prefix_sum

https://leetcode.com/problems/map-of-highest-peak/description/

Make growing landscape #medium #bfs

https://leetcode.com/problems/count-servers-that-communicate/description/

Connected servers by row or column #medium

https://leetcode.com/problems/find-eventual-safe-states/description/

Nodes without cycles #medium #dfs #toposort

https://leetcode.com/problems/make-lexicographically-smallest-array-by-swapping-elements/description/


Sort by swapping ab, where abs(a - b) < limit #medium

https://leetcode.com/problems/maximum-employees-to-be-invited-to-a-meeting/description/


Max connected siblings in graph #hard #dfs #toposort

https://leetcode.com/problems/course-schedule-iv/description/

All innodes for each query in graph #medium #dfs #toposort #floyd_warshall

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


Largest region in 2D grid #medium #bfs #dfs

https://leetcode.com/problems/redundant-connection/description/

First edge making a cycle in graph #medium #union_find