https://leetcode.com/problems/image-smoother/description/

3x3 average of each cell in 2D matrix

https://leetcode.com/problems/buy-two-chocolates/description/

Money change after two chocolates bought

https://leetcode.com/problems/widest-vertical-area-between-two-points-containing-no-points/description/

Max x window between xy points

https://leetcode.com/problems/maximum-score-after-splitting-a-string/description/

Max left_zeros + right_ones in 01-array

https://leetcode.com/problems/path-crossing/description/

Is path string of 'N', 'E', 'W', 'S' crosses

https://leetcode.com/problems/minimum-changes-to-make-alternating-binary-string/description/

Minimum operations to make 01-string with no two adjacent equal

https://leetcode.com/problems/decode-ways/description/

Ways to decode back 'A' -> '1', 'B' -> '2' … 'Z' -> '26'

https://leetcode.com/problems/number-of-dice-rolls-with-target-sum/description/

Ways to throw once n dices with k faces to make target sum.

https://leetcode.com/problems/minimum-time-to-make-rope-colorful/description/

Min sum of removed duplicates in array.

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

Min length of run-length encoded aabccc -> a2bc3 after deleting at most k characters

https://leetcode.com/problems/minimum-difficulty-of-a-job-schedule/description/

Min sum of maximums jobDifficulty[i] per day d preserving the order

https://leetcode.com/problems/redistribute-characters-to-make-all-strings-equal/description/

Is it possible to split all the words[] characters into words.size groups.

https://leetcode.com/problems/largest-substring-between-two-equal-characters/description/

Max distance between same chars in string.

Happy New Year everyone

https://leetcode.com/problems/assign-cookies/description/

Max count of greedy children g[Int] to assign cookies with sizes s[Int].

https://leetcode.com/problems/convert-an-array-into-a-2d-array-with-conditions/description/

Convert numbers array into array of unique number-rows.

https://leetcode.com/problems/number-of-laser-beams-in-a-bank/description/

Beams count between consequent non-empty row's `1`s.

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

Minimum pairs or triples duplicate removal operations to empty array of numbers.

https://leetcode.com/problems/longest-increasing-subsequence/description/

Longest increasing subsequence length.

https://leetcode.com/problems/maximum-profit-in-job-scheduling/description/

Max profit in non-intersecting jobs given startTime[], endTime[] and profit[].

https://leetcode.com/problems/arithmetic-slices-ii-subsequence/description/

Count of arithmetic subsequences.