# 02.08.2026
[1536. Minimum Swaps to Arrange a Binary Grid](https://leetcode.com/problems/minimum-swaps-to-arrange-a-binary-grid/description/) medium
Min rows swaps to zero above diagonal #medium
[1536. Minimum Swaps to Arrange a Binary Grid](https://leetcode.com/problems/minimum-swaps-to-arrange-a-binary-grid/description/) medium
Min rows swaps to zero above diagonal #medium
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# 03.03.2026
[1545. Find Kth Bit in Nth Binary String](https://leetcode.com/problems/find-kth-bit-in-nth-binary-string/description/) medium
Kth bit in s=s+1+inv(rev(s)) sequence #medium
[1545. Find Kth Bit in Nth Binary String](https://leetcode.com/problems/find-kth-bit-in-nth-binary-string/description/) medium
Kth bit in s=s+1+inv(rev(s)) sequence #medium
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# 04.08.2026
[1582. Special Positions in a Binary Matrix](https://leetcode.com/problems/special-positions-in-a-binary-matrix/description/) easy
Count single 1-row-column #easy
[1582. Special Positions in a Binary Matrix](https://leetcode.com/problems/special-positions-in-a-binary-matrix/description/) easy
Count single 1-row-column #easy
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# 05.03.2026
[1758. Minimum Changes To Make Alternating Binary String](https://leetcode.com/problems/minimum-changes-to-make-alternating-binary-string/description/) easy
Min flips to make bits alterating #easy
[1758. Minimum Changes To Make Alternating Binary String](https://leetcode.com/problems/minimum-changes-to-make-alternating-binary-string/description/) easy
Min flips to make bits alterating #easy
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# 06.03.2026
[1784. Check if Binary String Has at Most One Segment of Ones](https://leetcode.com/problems/check-if-binary-string-has-at-most-one-segment-of-ones/description) easy
1+0* pattern #easy
[1784. Check if Binary String Has at Most One Segment of Ones](https://leetcode.com/problems/check-if-binary-string-has-at-most-one-segment-of-ones/description) easy
1+0* pattern #easy
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# 07.03.2026
[1888. Minimum Number of Flips to Make the Binary String Alternating](https://leetcode.com/problems/minimum-number-of-flips-to-make-the-binary-string-alternating/description) medium
Min flips to make 01 alterating string #medium #prefix_sum #sliding_window
[1888. Minimum Number of Flips to Make the Binary String Alternating](https://leetcode.com/problems/minimum-number-of-flips-to-make-the-binary-string-alternating/description) medium
Min flips to make 01 alterating string #medium #prefix_sum #sliding_window
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# 08.03.2026
[1980. Find Unique Binary String](https://leetcode.com/problems/find-unique-binary-string/description) medium
Uniq bits not in a set #medium
[1980. Find Unique Binary String](https://leetcode.com/problems/find-unique-binary-string/description) medium
Uniq bits not in a set #medium
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# 09.03.2026
[3129. Find All Possible Stable Binary Arrays I](https://leetcode.com/problems/find-all-possible-stable-binary-arrays-i/description/) medium
Count 01-arrays with z zeros, o ones, at most l repeat #medium
[3129. Find All Possible Stable Binary Arrays I](https://leetcode.com/problems/find-all-possible-stable-binary-arrays-i/description/) medium
Count 01-arrays with z zeros, o ones, at most l repeat #medium
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# 10.03.2026
[3130. Find All Possible Stable Binary Arrays II](https://leetcode.com/problems/find-all-possible-stable-binary-arrays-ii/description/) hard
01-array to make with z zeros, o ones, l repeats #hard #dp
[3130. Find All Possible Stable Binary Arrays II](https://leetcode.com/problems/find-all-possible-stable-binary-arrays-ii/description/) hard
01-array to make with z zeros, o ones, l repeats #hard #dp
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# 11.03.2026
[1009. Complement of Base 10 Integer](https://leetcode.com/problems/complement-of-base-10-integer/description/) easy
[1009. Complement of Base 10 Integer](https://leetcode.com/problems/complement-of-base-10-integer/description/) easy
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# 12.03.2026
[3600. Maximize Spanning Tree Stability with Upgrades](https://leetcode.com/problems/maximize-spanning-tree-stability-with-upgrades/description/) hard
Max of min values in span tree of graph, 2*s at most k #hard #graph
[3600. Maximize Spanning Tree Stability with Upgrades](https://leetcode.com/problems/maximize-spanning-tree-stability-with-upgrades/description/) hard
Max of min values in span tree of graph, 2*s at most k #hard #graph
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# 13.03.2026
[3296. Minimum Number of Seconds to Make Mountain Height Zero](https://leetcode.com/problems/minimum-number-of-seconds-to-make-mountain-height-zero/description/) medium
Min steps to work a mountain with arithmetic-sum-workers #medium #bs
[3296. Minimum Number of Seconds to Make Mountain Height Zero](https://leetcode.com/problems/minimum-number-of-seconds-to-make-mountain-height-zero/description/) medium
Min steps to work a mountain with arithmetic-sum-workers #medium #bs
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# 14.03.2026
[1415. The k-th Lexicographical String of All Happy Strings of Length n](https://leetcode.com/problems/the-k-th-lexicographical-string-of-all-happy-strings-of-length-n/description/) medium
K-th generated abc non-repeating string #medium #dfs
[1415. The k-th Lexicographical String of All Happy Strings of Length n](https://leetcode.com/problems/the-k-th-lexicographical-string-of-all-happy-strings-of-length-n/description/) medium
K-th generated abc non-repeating string #medium #dfs
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# 15.03.2026
[1622. Fancy Sequence](https://leetcode.com/problems/fancy-sequence/description) hard
Design: add number, mulriply all, add all #design
[1622. Fancy Sequence](https://leetcode.com/problems/fancy-sequence/description) hard
Design: add number, mulriply all, add all #design
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# 16.03.2026
[1878. Get Biggest Three Rhombus Sums in a Grid](https://leetcode.com/problems/get-biggest-three-rhombus-sums-in-a-grid/description) medium
Top 3 rhombus sums #medium
[1878. Get Biggest Three Rhombus Sums in a Grid](https://leetcode.com/problems/get-biggest-three-rhombus-sums-in-a-grid/description) medium
Top 3 rhombus sums #medium
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# 17.03.2026
[1727. Largest Submatrix With Rearrangements](https://leetcode.com/problems/largest-submatrix-with-rearrangements/description/) medium
Max area of binary matrix, swap columns #medium
[1727. Largest Submatrix With Rearrangements](https://leetcode.com/problems/largest-submatrix-with-rearrangements/description/) medium
Max area of binary matrix, swap columns #medium
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# 18.03.2026
[3070. Count Submatrices with Top-Left Element and Sum Less Than k](https://leetcode.com/problems/count-submatrices-with-top-left-element-and-sum-less-than-k/description/) medium
Count prefix sums less than K #medium #matrix
[3070. Count Submatrices with Top-Left Element and Sum Less Than k](https://leetcode.com/problems/count-submatrices-with-top-left-element-and-sum-less-than-k/description/) medium
Count prefix sums less than K #medium #matrix
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# 19.03.2026
[3212. Count Submatrices With Equal Frequency of X and Y](https://leetcode.com/problems/count-submatrices-with-equal-frequency-of-x-and-y/description/) medium
Count prefix freq X == freq Y #medium #matrix
[3212. Count Submatrices With Equal Frequency of X and Y](https://leetcode.com/problems/count-submatrices-with-equal-frequency-of-x-and-y/description/) medium
Count prefix freq X == freq Y #medium #matrix
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# 20.03.2026
[3567. Minimum Absolute Difference in Sliding Submatrix](https://leetcode.com/problems/minimum-absolute-difference-in-sliding-submatrix/description) medium
Mid diffs in k*k submatrices #medium #matrix
[3567. Minimum Absolute Difference in Sliding Submatrix](https://leetcode.com/problems/minimum-absolute-difference-in-sliding-submatrix/description) medium
Mid diffs in k*k submatrices #medium #matrix
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# 21.03.2026
[3643. Flip Square Submatrix Vertically](https://leetcode.com/problems/flip-square-submatrix-vertically/descriptio) medium
Reverse submatrix k by k #easy
[3643. Flip Square Submatrix Vertically](https://leetcode.com/problems/flip-square-submatrix-vertically/descriptio) medium
Reverse submatrix k by k #easy
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# 22.03.2026
[1886. Determine Whether Matrix Can Be Obtained By Rotation](https://leetcode.com/problems/determine-whether-matrix-can-be-obtained-by-rotation/solutions/7680192/kotlin-rust-by-samoylenkodmitry-bnas/) easy
Rotate matrix #easy
[1886. Determine Whether Matrix Can Be Obtained By Rotation](https://leetcode.com/problems/determine-whether-matrix-can-be-obtained-by-rotation/solutions/7680192/kotlin-rust-by-samoylenkodmitry-bnas/) easy
Rotate matrix #easy
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