Days of non-intersecting intervals #medium #line_sweep


https://leetcode.com/problems/count-days-without-meetings/description

3 non-intersecting ranges on x or y axis #medium #line_sweep


https://leetcode.com/problems/check-if-grid-can-be-cut-into-sections/description/

Min sum of differences of x times #medium #math #quickselect



https://leetcode.com/problems/minimum-operations-to-make-a-uni-value-grid/description/

Min split index to have equal majority elements #medium #counting


https://leetcode.com/problems/minimum-index-of-a-valid-split/description/

Running queries of increasing BFS #hard #bfs #heap


https://leetcode.com/problems/maximum-number-of-points-from-grid-queries/description/

Multiply k numbers with max prime factor count #hard #monotonic_stack


https://leetcode.com/problems/apply-operations-to-maximize-score/description

Split string into separate chars sets #medium


https://leetcode.com/problems/partition-labels/description

https://leetcode.com/problems/put-marbles-in-bags/description/


Max split sum - min split sum of borders #hard #sort

Max sum of (points, skip_next) pairs #medium #dp


https://leetcode.com/problems/solving-questions-with-brainpower/description

https://leetcode.com/problems/maximum-value-of-an-ordered-triplet-i/description/


Max (a[i] - a[j]) * a[k] #easy

https://leetcode.com/problems/maximum-value-of-an-ordered-triplet-ii/description/


Max (a[i] - a[j]) * a[k] #medium

https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves/description

Lowest common ancestor of deepest tree nodes #medium #recursion

Sum of all subsets xors #easy #bit #math


https://leetcode.com/problems/sum-of-all-subset-xor-totals/description

Longest all pairs divisible subset #medium #dp


https://leetcode.com/problems/largest-divisible-subset/description/

Two equal sum subsets #medium #dp



https://leetcode.com/problems/partition-equal-subset-sum/description/

Count removals 3-prefixes to deduplicate #easy



https://leetcode.com/problems/minimum-number-of-operations-to-make-elements-in-array-distinct/description/

https://leetcode.com/problems/minimum-operations-to-make-array-values-equal-to-k/description/


Count number bigger than k #easy

https://leetcode.com/problems/count-the-number-of-powerful-integers/description/


Numbers in range start..finish, digits up to limit #hard #dp #math

https://leetcode.com/problems/count-symmetric-integers/description/


Numbers with equal half' sums #easy

Count palindromes of length n, divisible by k #hard #math #permutations


https://leetcode.com/problems/find-the-count-of-good-integers/description/

https://leetcode.com/problems/count-good-numbers/description/


Count (0,2,4,6,8)(2,3,5,7) generated strings of length n #medium #math