# 22.02.2026
[868. Binary Gap](https://leetcode.com/problems/binary-gap/description/) easy

Distance between onces in a binary #easy

# 23.02.2026
[1461. Check If a String Contains All Binary Codes of Size K](https://leetcode.com/problems/check-if-a-string-contains-all-binary-codes-of-size-k/description) medium

All numbers as substring length of k #medium #sliding_window

# 24.02.2026
[1022. Sum of Root To Leaf Binary Numbers](https://leetcode.com/problems/sum-of-root-to-leaf-binary-numbers/) easy

Sum of a binary numbers in a binary tree #easy

# 25.02.2026
[1356. Sort Integers by The Number of 1 Bits](https://leetcode.com/problems/sort-integers-by-the-number-of-1-bits/description) easy

Sort #easy

# 26.02.2026
[1404. Number of Steps to Reduce a Number in Binary Representation to One](https://leetcode.com/problems/number-of-steps-to-reduce-a-number-in-binary-representation-to-one/description/) medium

Ops /2+1 to make 1 #medium #simulation

# 27.02.2026
[3666. Minimum Operations to Equalize Binary String](https://leetcode.com/problems/minimum-operations-to-equalize-binary-string/description) hard

Min steps to convert 01 stirng to ones flipping K #hard #bfs

# 28.02.2026
[1680. Concatenation of Consecutive Binary Numbers](https://leetcode.com/problems/concatenation-of-consecutive-binary-numbers/description/) medium

Concat binaries 1..n #medium

# 01.02.2026
[1689. Partitioning Into Minimum Number Of Deci-Binary Numbers](https://leetcode.com/problems/partitioning-into-minimum-number-of-deci-binary-numbers/description/) medium

Min 01-strings add up to target #medium

# 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

# 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

# 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

# 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

# 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

# 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

# 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

# 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

# 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

# 11.03.2026
[1009. Complement of Base 10 Integer](https://leetcode.com/problems/complement-of-base-10-integer/description/) easy

# 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

# 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

# 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