This is a personal blog. Mail me if you want to use materials from it. https://dmitrysamoylenko.com/leetcode/ Max ones after replacing surrounding zeros https://dmitrysamoylenko.com/leetcode/problem/2026-07-21-3499-maximize-active-section-with-trade-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-21-3499-maximize-active-section-with-trade-i/ Tue, 21 Jul 2026 00:00:00 +0000 Shift right 2d grid https://dmitrysamoylenko.com/leetcode/problem/2026-07-20-1260-shift-2d-grid/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-20-1260-shift-2d-grid/ Mon, 20 Jul 2026 00:00:00 +0000 Smallest uniq-chars subsequence https://dmitrysamoylenko.com/leetcode/problem/2026-07-19-1081-smallest-subsequence-of-distinct-characters/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-19-1081-smallest-subsequence-of-distinct-characters/ Sun, 19 Jul 2026 00:00:00 +0000 GCD of min & max https://dmitrysamoylenko.com/leetcode/problem/2026-07-18-1979-find-greatest-common-divisor-of-array/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-18-1979-find-greatest-common-divisor-of-array/ Sat, 18 Jul 2026 00:00:00 +0000 Queries of position of gcd of every pair in a sorted order https://dmitrysamoylenko.com/leetcode/problem/2026-07-17-3312-sorted-gcd-pair-queries/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-17-3312-sorted-gcd-pair-queries/ Fri, 17 Jul 2026 00:00:00 +0000 Sum of gcd(min,max) of gcd(x, prefix max) https://dmitrysamoylenko.com/leetcode/problem/2026-07-16-3867-sum-of-gcd-of-formed-pairs/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-16-3867-sum-of-gcd-of-formed-pairs/ Thu, 16 Jul 2026 00:00:00 +0000 Gcd of odds and evens https://dmitrysamoylenko.com/leetcode/problem/2026-07-15-3658-gcd-of-odd-and-even-sums/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-15-3658-gcd-of-odd-and-even-sums/ Wed, 15 Jul 2026 00:00:00 +0000 Equal gcd subsequencies https://dmitrysamoylenko.com/leetcode/problem/2026-07-14-3336-find-the-number-of-subsequences-with-equal-gcd/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-14-3336-find-the-number-of-subsequences-with-equal-gcd/ Tue, 14 Jul 2026 00:00:00 +0000 Increasing digit numbers in a range https://dmitrysamoylenko.com/leetcode/problem/2026-07-13-1291-sequential-digits/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-13-1291-sequential-digits/ Mon, 13 Jul 2026 00:00:00 +0000 Rank of items in an array https://dmitrysamoylenko.com/leetcode/problem/2026-07-12-1331-rank-transform-of-an-array/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-12-1331-rank-transform-of-an-array/ Sun, 12 Jul 2026 00:00:00 +0000 Fully connected components https://dmitrysamoylenko.com/leetcode/problem/2026-07-11-2685-count-the-number-of-complete-components/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-11-2685-count-the-number-of-complete-components/ Sat, 11 Jul 2026 00:00:00 +0000 Queries of connected nodes shortest distances https://dmitrysamoylenko.com/leetcode/problem/2026-07-10-3534-path-existence-queries-in-a-graph-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-10-3534-path-existence-queries-in-a-graph-ii/ Fri, 10 Jul 2026 00:00:00 +0000 Queries of connected nodes https://dmitrysamoylenko.com/leetcode/problem/2026-07-09-3532-path-existence-queries-in-a-graph-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-09-3532-path-existence-queries-in-a-graph-i/ Thu, 09 Jul 2026 00:00:00 +0000 Queries of sum digits concat digits https://dmitrysamoylenko.com/leetcode/problem/2026-07-08-3756-concatenate-non-zero-digits-and-multiply-by-sum-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-08-3756-concatenate-non-zero-digits-and-multiply-by-sum-ii/ Wed, 08 Jul 2026 00:00:00 +0000 Sum digits concat digits https://dmitrysamoylenko.com/leetcode/problem/2026-07-07-3754-concatenate-non-zero-digits-and-multiply-by-sum-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-07-3754-concatenate-non-zero-digits-and-multiply-by-sum-i/ Tue, 07 Jul 2026 00:00:00 +0000 Count non intersecting intervals https://dmitrysamoylenko.com/leetcode/problem/2026-07-06-1288-remove-covered-intervals/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-06-1288-remove-covered-intervals/ Mon, 06 Jul 2026 00:00:00 +0000 Count maximal paths https://dmitrysamoylenko.com/leetcode/problem/2026-07-05-1301-number-of-paths-with-max-score/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-05-1301-number-of-paths-with-max-score/ Sun, 05 Jul 2026 00:00:00 +0000 Min in connected edges https://dmitrysamoylenko.com/leetcode/problem/2026-07-04-2492-minimum-score-of-a-path-between-two-cities/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-04-2492-minimum-score-of-a-path-between-two-cities/ Sat, 04 Jul 2026 00:00:00 +0000 Max(min(paths)) in DAG https://dmitrysamoylenko.com/leetcode/problem/2026-07-03-3620-network-recovery-pathways/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-03-3620-network-recovery-pathways/ Fri, 03 Jul 2026 00:00:00 +0000 Path to bottom-right with health points https://dmitrysamoylenko.com/leetcode/problem/2026-07-02-3286-find-a-safe-walk-through-a-grid/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-02-3286-find-a-safe-walk-through-a-grid/ Thu, 02 Jul 2026 00:00:00 +0000 Safest path from ones https://dmitrysamoylenko.com/leetcode/problem/2026-07-01-2812-find-the-safest-path-in-a-grid/ https://dmitrysamoylenko.com/leetcode/problem/2026-07-01-2812-find-the-safest-path-in-a-grid/ Wed, 01 Jul 2026 00:00:00 +0000 Substrings with 3 letters https://dmitrysamoylenko.com/leetcode/problem/2026-06-30-1358-number-of-substrings-containing-all-three-characters/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-30-1358-number-of-substrings-containing-all-three-characters/ Tue, 30 Jun 2026 00:00:00 +0000 N patterns in a word https://dmitrysamoylenko.com/leetcode/problem/2026-06-29-1967-number-of-strings-that-appear-as-substrings-in-word/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-29-1967-number-of-strings-that-appear-as-substrings-in-word/ Mon, 29 Jun 2026 00:00:00 +0000 Max possible grow of +0 or +1 https://dmitrysamoylenko.com/leetcode/problem/2026-06-28-1846-maximum-element-after-decreasing-and-rearranging/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-28-1846-maximum-element-after-decreasing-and-rearranging/ Sun, 28 Jun 2026 00:00:00 +0000 Powers of two symmetrical exponentially growing longest sequence length https://dmitrysamoylenko.com/leetcode/problem/2026-06-27-3020-find-the-maximum-number-of-elements-in-subset/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-27-3020-find-the-maximum-number-of-elements-in-subset/ Sat, 27 Jun 2026 00:00:00 +0000 Subarrays with majority element https://dmitrysamoylenko.com/leetcode/problem/2026-06-26-3739-count-subarrays-with-majority-element-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-26-3739-count-subarrays-with-majority-element-ii/ Fri, 26 Jun 2026 00:00:00 +0000 Subarrays with majority element https://dmitrysamoylenko.com/leetcode/problem/2026-06-25-3737-count-subarrays-with-majority-element-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-25-3737-count-subarrays-with-majority-element-i/ Thu, 25 Jun 2026 00:00:00 +0000 Ways to make l..r zigzag sequence https://dmitrysamoylenko.com/leetcode/problem/2026-06-24-3700-number-of-zigzag-arrays-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-24-3700-number-of-zigzag-arrays-ii/ Wed, 24 Jun 2026 00:00:00 +0000 Ways to make l..r zigzag sequence https://dmitrysamoylenko.com/leetcode/problem/2026-06-23-3699-number-of-zigzag-arrays-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-23-3699-number-of-zigzag-arrays-i/ Tue, 23 Jun 2026 00:00:00 +0000 Count "balloon"s in stirng https://dmitrysamoylenko.com/leetcode/problem/2026-06-22-1189-maximum-number-of-balloons/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-22-1189-maximum-number-of-balloons/ Mon, 22 Jun 2026 00:00:00 +0000 Max count by given coins https://dmitrysamoylenko.com/leetcode/problem/2026-06-21-1833-maximum-ice-cream-bars/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-21-1833-maximum-ice-cream-bars/ Sun, 21 Jun 2026 00:00:00 +0000 Max growing height with restrictions https://dmitrysamoylenko.com/leetcode/problem/2026-06-20-1840-maximum-building-height/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-20-1840-maximum-building-height/ Sat, 20 Jun 2026 00:00:00 +0000 Max running sum https://dmitrysamoylenko.com/leetcode/problem/2026-06-19-1732-find-the-highest-altitude/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-19-1732-find-the-highest-altitude/ Fri, 19 Jun 2026 00:00:00 +0000 Angle between clock arrows https://dmitrysamoylenko.com/leetcode/problem/2026-06-18-1344-angle-between-hands-of-a-clock/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-18-1344-angle-between-hands-of-a-clock/ Thu, 18 Jun 2026 00:00:00 +0000 K-th char ina pattern-build a string, %-reverse, , -pop https://dmitrysamoylenko.com/leetcode/problem/2026-06-17-3614-process-string-with-special-operations-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-17-3614-process-string-with-special-operations-ii/ Wed, 17 Jun 2026 00:00:00 +0000 Pattern-build a string, %-reverse, , -pop https://dmitrysamoylenko.com/leetcode/problem/2026-06-16-3612-process-string-with-special-operations-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-16-3612-process-string-with-special-operations-i/ Tue, 16 Jun 2026 00:00:00 +0000 Remove the middle of Linked LIst https://dmitrysamoylenko.com/leetcode/problem/2026-06-15-2095-delete-the-middle-node-of-a-linked-list/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-15-2095-delete-the-middle-node-of-a-linked-list/ Mon, 15 Jun 2026 00:00:00 +0000 Max sum pairwise from tail https://dmitrysamoylenko.com/leetcode/problem/2026-06-14-2130-maximum-twin-sum-of-a-linked-list/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-14-2130-maximum-twin-sum-of-a-linked-list/ Sun, 14 Jun 2026 00:00:00 +0000 Convert words to chars by weighting their sums and reversing https://dmitrysamoylenko.com/leetcode/problem/2026-06-13-3838-weighted-word-mapping/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-13-3838-weighted-word-mapping/ Sat, 13 Jun 2026 00:00:00 +0000 Ways to color the all queries paths a..b in tree https://dmitrysamoylenko.com/leetcode/problem/2026-06-12-3559-number-of-ways-to-assign-edge-weights-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-12-3559-number-of-ways-to-assign-edge-weights-ii/ Fri, 12 Jun 2026 00:00:00 +0000 Ways to color the deepest path in tree https://dmitrysamoylenko.com/leetcode/problem/2026-06-11-3558-number-of-ways-to-assign-edge-weights-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-11-3558-number-of-ways-to-assign-edge-weights-i/ Thu, 11 Jun 2026 00:00:00 +0000 sum k largest ranges max(l..r)-min(l..r) https://dmitrysamoylenko.com/leetcode/problem/2026-06-10-3691-maximum-total-subarray-value-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-10-3691-maximum-total-subarray-value-ii/ Wed, 10 Jun 2026 00:00:00 +0000 abs(prefix sum - suffix sum) https://dmitrysamoylenko.com/leetcode/problem/2026-06-06-2574-left-and-right-sum-differences/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-06-2574-left-and-right-sum-differences/ Sat, 06 Jun 2026 00:00:00 +0000 Count hills and valleys base10 in a..b https://dmitrysamoylenko.com/leetcode/problem/2026-06-05-3753-total-waviness-of-numbers-in-range-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-05-3753-total-waviness-of-numbers-in-range-ii/ Fri, 05 Jun 2026 00:00:00 +0000 Count hills and valleys base10 in a..b https://dmitrysamoylenko.com/leetcode/problem/2026-06-04-3751-total-waviness-of-numbers-in-range-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-04-3751-total-waviness-of-numbers-in-range-i/ Thu, 04 Jun 2026 00:00:00 +0000 Min finish time of land + water single events https://dmitrysamoylenko.com/leetcode/problem/2026-06-03-3635-earliest-finish-time-for-land-and-water-rides-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-03-3635-earliest-finish-time-for-land-and-water-rides-ii/ Wed, 03 Jun 2026 00:00:00 +0000 Min finish time of land + water single events https://dmitrysamoylenko.com/leetcode/problem/2026-06-02-3633-earliest-finish-time-for-land-and-water-rides-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-02-3633-earliest-finish-time-for-land-and-water-rides-i/ Tue, 02 Jun 2026 00:00:00 +0000 Min sum taking 2 out of 3 https://dmitrysamoylenko.com/leetcode/problem/2026-06-01-2144-minimum-cost-of-buying-candies-with-discount/ https://dmitrysamoylenko.com/leetcode/problem/2026-06-01-2144-minimum-cost-of-buying-candies-with-discount/ Mon, 01 Jun 2026 00:00:00 +0000 Can consume all asteroids smaller than running sum? https://dmitrysamoylenko.com/leetcode/problem/2026-05-31-2126-destroying-asteroids/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-31-2126-destroying-asteroids/ Sun, 31 May 2026 00:00:00 +0000 Queries 'can place a gap after place an obstacle' https://dmitrysamoylenko.com/leetcode/problem/2026-05-30-3161-block-placement-queries/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-30-3161-block-placement-queries/ Sat, 30 May 2026 00:00:00 +0000 Min of digits sum https://dmitrysamoylenko.com/leetcode/problem/2026-05-29-3300-minimum-element-after-replacement-with-digit-sum/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-29-3300-minimum-element-after-replacement-with-digit-sum/ Fri, 29 May 2026 00:00:00 +0000 Query common suffixes match https://dmitrysamoylenko.com/leetcode/problem/2026-05-28-3093-longest-common-suffix-queries/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-28-3093-longest-common-suffix-queries/ Thu, 28 May 2026 00:00:00 +0000 Count sorted characters https://dmitrysamoylenko.com/leetcode/problem/2026-05-27-3121-count-the-number-of-special-characters-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-27-3121-count-the-number-of-special-characters-ii/ Wed, 27 May 2026 00:00:00 +0000 Count letters with both cases https://dmitrysamoylenko.com/leetcode/problem/2026-05-26-3120-count-the-number-of-special-characters-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-26-3120-count-the-number-of-special-characters-i/ Tue, 26 May 2026 00:00:00 +0000 Can reach end jumping min..max to zeros https://dmitrysamoylenko.com/leetcode/problem/2026-05-25-1871-jump-game-vii/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-25-1871-jump-game-vii/ Mon, 25 May 2026 00:00:00 +0000 Max visited by jumping down in distance d https://dmitrysamoylenko.com/leetcode/problem/2026-05-24-1340-jump-game-v/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-24-1340-jump-game-v/ Sun, 24 May 2026 00:00:00 +0000 Is array shifted and sorted? https://dmitrysamoylenko.com/leetcode/problem/2026-05-23-1752-check-if-array-is-sorted-and-rotated/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-23-1752-check-if-array-is-sorted-and-rotated/ Sat, 23 May 2026 00:00:00 +0000 Binary search in shifted array https://dmitrysamoylenko.com/leetcode/problem/2026-05-22-33-search-in-rotated-sorted-array/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-22-33-search-in-rotated-sorted-array/ Fri, 22 May 2026 00:00:00 +0000 Longest prefix of pairs https://dmitrysamoylenko.com/leetcode/problem/2026-05-21-3043-find-the-length-of-the-longest-common-prefix/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-21-3043-find-the-length-of-the-longest-common-prefix/ Thu, 21 May 2026 00:00:00 +0000 Duplicates in prefixes https://dmitrysamoylenko.com/leetcode/problem/2026-05-20-2657-find-the-prefix-common-array-of-two-arrays/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-20-2657-find-the-prefix-common-array-of-two-arrays/ Wed, 20 May 2026 00:00:00 +0000 Min common of two sorted list https://dmitrysamoylenko.com/leetcode/problem/2026-05-19-2540-minimum-common-value/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-19-2540-minimum-common-value/ Tue, 19 May 2026 00:00:00 +0000 Min steps to reach end jumping to same value or left or right https://dmitrysamoylenko.com/leetcode/problem/2026-05-18-1345-jump-game-iv/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-18-1345-jump-game-iv/ Mon, 18 May 2026 00:00:00 +0000 Can reach 0 by jumping +a[i] - a[i] https://dmitrysamoylenko.com/leetcode/problem/2026-05-17-1306-jump-game-iii/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-17-1306-jump-game-iii/ Sun, 17 May 2026 00:00:00 +0000 Binary search in shifted array with duplicates https://dmitrysamoylenko.com/leetcode/problem/2026-05-16-154-find-minimum-in-rotated-sorted-array-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-16-154-find-minimum-in-rotated-sorted-array-ii/ Sat, 16 May 2026 00:00:00 +0000 Binary search in shifted array https://dmitrysamoylenko.com/leetcode/problem/2026-05-15-153-find-minimum-in-rotated-sorted-array/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-15-153-find-minimum-in-rotated-sorted-array/ Fri, 15 May 2026 00:00:00 +0000 Is combination 1..n,n https://dmitrysamoylenko.com/leetcode/problem/2026-05-14-2784-check-if-array-is-good/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-14-2784-check-if-array-is-good/ Thu, 14 May 2026 00:00:00 +0000 Min changes 1..L to make complementary pair sum equal https://dmitrysamoylenko.com/leetcode/problem/2026-05-13-1674-minimum-moves-to-make-array-complementary/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-13-1674-minimum-moves-to-make-array-complementary/ Wed, 13 May 2026 00:00:00 +0000 Energy for all tasks (spend, limit) https://dmitrysamoylenko.com/leetcode/problem/2026-05-12-1665-minimum-initial-energy-to-finish-tasks/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-12-1665-minimum-initial-energy-to-finish-tasks/ Tue, 12 May 2026 00:00:00 +0000 LIst of numbers to list of digits https://dmitrysamoylenko.com/leetcode/problem/2026-05-11-2553-separate-the-digits-in-an-array/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-11-2553-separate-the-digits-in-an-array/ Mon, 11 May 2026 00:00:00 +0000 Max steps to reach end by jumps n[j]-n[i] in -t..t https://dmitrysamoylenko.com/leetcode/problem/2026-05-10-2770-maximum-number-of-jumps-to-reach-the-last-index/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-10-2770-maximum-number-of-jumps-to-reach-the-last-index/ Sun, 10 May 2026 00:00:00 +0000 Rotate matix layers by k https://dmitrysamoylenko.com/leetcode/problem/2026-05-09-1914-cyclically-rotating-a-grid/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-09-1914-cyclically-rotating-a-grid/ Sat, 09 May 2026 00:00:00 +0000 Shortest path by prime factors https://dmitrysamoylenko.com/leetcode/problem/2026-05-08-3629-minimum-jumps-to-reach-end-via-prime-teleportation/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-08-3629-minimum-jumps-to-reach-end-via-prime-teleportation/ Fri, 08 May 2026 00:00:00 +0000 Max on path jumping left-up and right-down https://dmitrysamoylenko.com/leetcode/problem/2026-05-07-3660-jump-game-ix/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-07-3660-jump-game-ix/ Thu, 07 May 2026 00:00:00 +0000 Rotate and simulate gravity in matrix https://dmitrysamoylenko.com/leetcode/problem/2026-05-06-1861-rotating-the-box/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-06-1861-rotating-the-box/ Wed, 06 May 2026 00:00:00 +0000 Rotate linked list k steps https://dmitrysamoylenko.com/leetcode/problem/2026-05-05-61-rotate-list/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-05-61-rotate-list/ Tue, 05 May 2026 00:00:00 +0000 Rotate square matrix https://dmitrysamoylenko.com/leetcode/problem/2026-05-04-48-rotate-image/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-04-48-rotate-image/ Mon, 04 May 2026 00:00:00 +0000 Match strings after rotation https://dmitrysamoylenko.com/leetcode/problem/2026-05-03-796-rotate-string/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-03-796-rotate-string/ Sun, 03 May 2026 00:00:00 +0000 Count numbers in 0..n with mirrored digits 2-5 6-9, 0,1,8, but not 3,4,7 https://dmitrysamoylenko.com/leetcode/problem/2026-05-02-788-rotated-digits/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-02-788-rotated-digits/ Sat, 02 May 2026 00:00:00 +0000 Max rolling hash https://dmitrysamoylenko.com/leetcode/problem/2026-05-01-396-rotate-function/ https://dmitrysamoylenko.com/leetcode/problem/2026-05-01-396-rotate-function/ Fri, 01 May 2026 00:00:00 +0000 Max right-bottom path value with at most k cost https://dmitrysamoylenko.com/leetcode/problem/2026-04-30-3742-maximum-path-score-in-a-grid/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-30-3742-maximum-path-score-in-a-grid/ Thu, 30 Apr 2026 00:00:00 +0000 Max sum adjacent to marked columns https://dmitrysamoylenko.com/leetcode/problem/2026-04-29-3225-maximum-score-from-grid-operations/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-29-3225-maximum-score-from-grid-operations/ Wed, 29 Apr 2026 00:00:00 +0000 Min ops to make all numbers equal by +-X https://dmitrysamoylenko.com/leetcode/problem/2026-04-28-2033-minimum-operations-to-make-a-uni-value-grid/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-28-2033-minimum-operations-to-make-a-uni-value-grid/ Tue, 28 Apr 2026 00:00:00 +0000 Path 0 to end on type-cells 2D grid https://dmitrysamoylenko.com/leetcode/problem/2026-04-27-1391-check-if-there-is-a-valid-path-in-a-grid/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-27-1391-check-if-there-is-a-valid-path-in-a-grid/ Mon, 27 Apr 2026 00:00:00 +0000 Check cycle in 2D grid https://dmitrysamoylenko.com/leetcode/problem/2026-04-26-1559-detect-cycles-in-2d-grid/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-26-1559-detect-cycles-in-2d-grid/ Sun, 26 Apr 2026 00:00:00 +0000 Max of minimum distnace between selected k points on square perimeter https://dmitrysamoylenko.com/leetcode/problem/2026-04-25-3464-maximize-the-distance-between-points-on-a-square/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-25-3464-maximize-the-distance-between-points-on-a-square/ Sat, 25 Apr 2026 00:00:00 +0000 Max dist when replace with L or R https://dmitrysamoylenko.com/leetcode/problem/2026-04-24-2833-furthest-point-from-origin/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-24-2833-furthest-point-from-origin/ Fri, 24 Apr 2026 00:00:00 +0000 Sum of distances to each occurance https://dmitrysamoylenko.com/leetcode/problem/2026-04-23-2615-sum-of-distances/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-23-2615-sum-of-distances/ Thu, 23 Apr 2026 00:00:00 +0000 Words in dictionary with 2 edits https://dmitrysamoylenko.com/leetcode/problem/2026-04-22-2452-words-within-two-edits-of-dictionary/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-22-2452-words-within-two-edits-of-dictionary/ Wed, 22 Apr 2026 00:00:00 +0000 Diff src vs target after rearrange by rules https://dmitrysamoylenko.com/leetcode/problem/2026-04-21-1722-minimize-hamming-distance-after-swap-operations/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-21-1722-minimize-hamming-distance-after-swap-operations/ Tue, 21 Apr 2026 00:00:00 +0000 Max distance between different numbers https://dmitrysamoylenko.com/leetcode/problem/2026-04-20-2078-two-furthest-houses-with-different-colors/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-20-2078-two-furthest-houses-with-different-colors/ Mon, 20 Apr 2026 00:00:00 +0000 Max distance a[i] not greater than b[j] window https://dmitrysamoylenko.com/leetcode/problem/2026-04-19-1855-maximum-distance-between-a-pair-of-values/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-19-1855-maximum-distance-between-a-pair-of-values/ Sun, 19 Apr 2026 00:00:00 +0000 Diff with reversal https://dmitrysamoylenko.com/leetcode/problem/2026-04-18-3783-mirror-distance-of-an-integer/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-18-3783-mirror-distance-of-an-integer/ Sat, 18 Apr 2026 00:00:00 +0000 Distance to prev mirror number https://dmitrysamoylenko.com/leetcode/problem/2026-04-17-3761-minimum-absolute-distance-between-mirror-pairs/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-17-3761-minimum-absolute-distance-between-mirror-pairs/ Fri, 17 Apr 2026 00:00:00 +0000 Shortest distances to the same values https://dmitrysamoylenko.com/leetcode/problem/2026-04-16-3488-closest-equal-element-queries/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-16-3488-closest-equal-element-queries/ Thu, 16 Apr 2026 00:00:00 +0000 Distance to target https://dmitrysamoylenko.com/leetcode/problem/2026-04-15-2515-shortest-distance-to-target-string-in-a-circular-array/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-15-2515-shortest-distance-to-target-string-in-a-circular-array/ Wed, 15 Apr 2026 00:00:00 +0000 Shortest distances to travel robots to factories https://dmitrysamoylenko.com/leetcode/problem/2026-04-14-2463-minimum-total-distance-traveled/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-14-2463-minimum-total-distance-traveled/ Tue, 14 Apr 2026 00:00:00 +0000 Distance to target from start https://dmitrysamoylenko.com/leetcode/problem/2026-04-13-1848-minimum-distance-to-the-target-element/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-13-1848-minimum-distance-to-the-target-element/ Mon, 13 Apr 2026 00:00:00 +0000 Min travel on keyboard to type a word https://dmitrysamoylenko.com/leetcode/problem/2026-04-12-1320-minimum-distance-to-type-a-word-using-two-fingers/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-12-1320-minimum-distance-to-type-a-word-using-two-fingers/ Sun, 12 Apr 2026 00:00:00 +0000 Min sum of distances between i,j,k of the same values https://dmitrysamoylenko.com/leetcode/problem/2026-04-11-3741-minimum-distance-between-three-equal-elements-ii/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-11-3741-minimum-distance-between-three-equal-elements-ii/ Sat, 11 Apr 2026 00:00:00 +0000 Min sum of distances between i,j,k of the same values https://dmitrysamoylenko.com/leetcode/problem/2026-04-10-3740-minimum-distance-between-three-equal-elements-i/ https://dmitrysamoylenko.com/leetcode/problem/2026-04-10-3740-minimum-distance-between-three-equal-elements-i/ Fri, 10 Apr 2026 00:00:00 +0000