A collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

LeetCode Topics

Stack

0094-binary-tree-inorder-traversal
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal

Tree

0094-binary-tree-inorder-traversal
0098-validate-binary-search-tree
0100-same-tree
0101-symmetric-tree
0102-binary-tree-level-order-traversal
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree
0111-minimum-depth-of-binary-tree
0112-path-sum
0129-sum-root-to-leaf-numbers
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0226-invert-binary-tree
0404-sum-of-left-leaves
0450-delete-node-in-a-bst
0501-find-mode-in-binary-search-tree
0513-find-bottom-left-tree-value
0530-minimum-absolute-difference-in-bst
0606-construct-string-from-binary-tree
0671-second-minimum-node-in-a-binary-tree
0783-search-in-a-binary-search-tree
0784-insert-into-a-binary-search-tree
0799-minimum-distance-between-bst-nodes
0904-leaf-similar-trees
0975-range-sum-of-bst
0998-check-completeness-of-a-binary-tree
1005-univalued-binary-tree
1035-cousins-in-binary-tree
1079-sum-of-root-to-leaf-binary-numbers
1254-deepest-leaves-sum
1427-all-elements-in-two-binary-search-trees
1544-count-good-nodes-in-binary-tree
2384-root-equals-sum-of-children

Depth-First Search

0094-binary-tree-inorder-traversal
0098-validate-binary-search-tree
0100-same-tree
0101-symmetric-tree
0104-maximum-depth-of-binary-tree
0111-minimum-depth-of-binary-tree
0112-path-sum
0129-sum-root-to-leaf-numbers
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0200-number-of-islands
0226-invert-binary-tree
0404-sum-of-left-leaves
0417-pacific-atlantic-water-flow
0501-find-mode-in-binary-search-tree
0513-find-bottom-left-tree-value
0530-minimum-absolute-difference-in-bst
0606-construct-string-from-binary-tree
0671-second-minimum-node-in-a-binary-tree
0733-flood-fill
0799-minimum-distance-between-bst-nodes
0904-leaf-similar-trees
0975-range-sum-of-bst
1005-univalued-binary-tree
1035-cousins-in-binary-tree
1079-sum-of-root-to-leaf-binary-numbers
1254-deepest-leaves-sum
1427-all-elements-in-two-binary-search-trees
1544-count-good-nodes-in-binary-tree

Binary Tree

0094-binary-tree-inorder-traversal
0098-validate-binary-search-tree
0100-same-tree
0101-symmetric-tree
0102-binary-tree-level-order-traversal
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree
0111-minimum-depth-of-binary-tree
0112-path-sum
0129-sum-root-to-leaf-numbers
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0226-invert-binary-tree
0404-sum-of-left-leaves
0450-delete-node-in-a-bst
0501-find-mode-in-binary-search-tree
0513-find-bottom-left-tree-value
0530-minimum-absolute-difference-in-bst
0606-construct-string-from-binary-tree
0671-second-minimum-node-in-a-binary-tree
0783-search-in-a-binary-search-tree
0784-insert-into-a-binary-search-tree
0799-minimum-distance-between-bst-nodes
0904-leaf-similar-trees
0975-range-sum-of-bst
0998-check-completeness-of-a-binary-tree
1005-univalued-binary-tree
1035-cousins-in-binary-tree
1079-sum-of-root-to-leaf-binary-numbers
1254-deepest-leaves-sum
1427-all-elements-in-two-binary-search-trees
1544-count-good-nodes-in-binary-tree
2384-root-equals-sum-of-children

Binary Search Tree

0098-validate-binary-search-tree
0450-delete-node-in-a-bst
0501-find-mode-in-binary-search-tree
0530-minimum-absolute-difference-in-bst
0783-search-in-a-binary-search-tree
0784-insert-into-a-binary-search-tree
0799-minimum-distance-between-bst-nodes
0975-range-sum-of-bst
1427-all-elements-in-two-binary-search-trees
2392-successful-pairs-of-spells-and-potions

Breadth-First Search

0100-same-tree
0101-symmetric-tree
0102-binary-tree-level-order-traversal
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree
0111-minimum-depth-of-binary-tree
0112-path-sum
0200-number-of-islands
0226-invert-binary-tree
0404-sum-of-left-leaves
0417-pacific-atlantic-water-flow
0513-find-bottom-left-tree-value
0530-minimum-absolute-difference-in-bst
0733-flood-fill
0799-minimum-distance-between-bst-nodes
0998-check-completeness-of-a-binary-tree
1005-univalued-binary-tree
1035-cousins-in-binary-tree
1254-deepest-leaves-sum
1544-count-good-nodes-in-binary-tree

String

0606-construct-string-from-binary-tree

Array

0048-rotate-image
0200-number-of-islands
0284-peeking-iterator
0417-pacific-atlantic-water-flow
0733-flood-fill
2392-successful-pairs-of-spells-and-potions
3383-taking-maximum-energy-from-the-mystic-dungeon

Matrix

0048-rotate-image
0200-number-of-islands
0417-pacific-atlantic-water-flow
0733-flood-fill

Math

0048-rotate-image

Sorting

1427-all-elements-in-two-binary-search-trees
2392-successful-pairs-of-spells-and-potions

Design

0284-peeking-iterator

Iterator

0284-peeking-iterator

Union Find

0200-number-of-islands

Two Pointers

2392-successful-pairs-of-spells-and-potions

Prefix Sum

3383-taking-maximum-energy-from-the-mystic-dungeon