https://leetcode.com/problems/maximum-swap/description/
Max number after a single digits swap #medium #greedy
Max number after a single digits swap #medium #greedy
👍3
https://leetcode.com/problems/count-number-of-maximum-bitwise-or-subsets/description/
Count subsequences with max bitwise
Count subsequences with max bitwise
or
#medium #backtracking👍4
https://leetcode.com/problems/find-kth-bit-in-nth-binary-string/description/
k`th bit of sequence `bs[i] = bs[i-1] + '1' + rev(inv(bs[i-1]))
#medium #bit_manipulation👍3
https://leetcode.com/problems/parsing-a-boolean-expression/description/
Parse boolean expression #hard #stack #recursion
Parse boolean expression #hard #stack #recursion
👍4
https://leetcode.com/problems/split-a-string-into-the-max-number-of-unique-substrings/description/
Max count of unique split parts #medium #backtrack
Max count of unique split parts #medium #backtrack
👍4
https://leetcode.com/problems/kth-largest-sum-in-a-binary-tree/description/
`k`th largest level-sum in a tree #bfs #heap #quickselect
`k`th largest level-sum in a tree #bfs #heap #quickselect
👍4
https://leetcode.com/problems/cousins-in-binary-tree-ii/description/
Replace Tree's values with cousines sum #medium #bfs
Replace Tree's values with cousines sum #medium #bfs
👍3
https://leetcode.com/problems/flip-equivalent-binary-trees/description/
Are trees flip-equal #medium #recursion #dfs
Are trees flip-equal #medium #recursion #dfs
👍3
https://leetcode.com/problems/remove-sub-folders-from-the-filesystem/description/
Remove empty subfolders #medium #trie #sort
Remove empty subfolders #medium #trie #sort
👍4
https://leetcode.com/problems/height-of-binary-tree-after-subtree-removal-queries/description/
n
new heights by cutting nodes in a Tree #hard #dfs👍3
https://leetcode.com/problems/count-square-submatrices-with-all-ones/description/
Count
Count
1
-filled squares in 2D matrix #medium #dynamic_programming👍4
https://leetcode.com/problems/longest-square-streak-in-an-array/description/
Longest quadratic subset #medium #hashmap #math
Longest quadratic subset #medium #hashmap #math
👍2
https://leetcode.com/problems/maximum-number-of-moves-in-a-grid/description/
Max increasing path from left to right in 2D matrix #medium #dynamic_programming
Max increasing path from left to right in 2D matrix #medium #dynamic_programming
👍2
https://leetcode.com/problems/minimum-number-of-removals-to-make-mountain-array/description/
Min removes to make a mountain #hard #dynamic_programming #binary_search #lis
Min removes to make a mountain #hard #dynamic_programming #binary_search #lis
👍2
https://leetcode.com/problems/minimum-total-distance-traveled/description/
Min robots[x] travel to factories[x,capacity] #hard #dynamic_programming #sorting
Min robots[x] travel to factories[x,capacity] #hard #dynamic_programming #sorting
👍2
https://leetcode.com/problems/delete-characters-to-make-fancy-string/description/
Filter 3+ repeating chars from string #easy
Filter 3+ repeating chars from string #easy
👍2
https://leetcode.com/problems/rotate-string/description/
Is string rotated
Is string rotated
goal
? #easy #kmp #rolling-hash👍2
https://leetcode.com/problems/string-compression-iii/description/
Compress repeating chars in string #medium #two_pointers
Compress repeating chars in string #medium #two_pointers
👍2
https://leetcode.com/problems/minimum-number-of-changes-to-make-binary-string-beautiful/description/
Min changes to make even-sized
Min changes to make even-sized
0
and 1
#medium👍2