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

LeetCode Topics

Math


0172-factorial-trailing-zeroes
0380-insert-delete-getrandom-o1
0381-insert-delete-getrandom-o1-duplicates-allowed
0592-fraction-addition-and-subtraction
1585-the-kth-factor-of-n

Number Theory


1585-the-kth-factor-of-n

Array


0040-combination-sum-ii
0153-find-minimum-in-rotated-sorted-array
0215-kth-largest-element-in-an-array
0380-insert-delete-getrandom-o1
0381-insert-delete-getrandom-o1-duplicates-allowed
0624-maximum-distance-in-arrays
0827-expressive-words
1046-max-consecutive-ones-iii
1445-number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold
1615-range-sum-of-sorted-subarray-sums
1798-max-number-of-k-sum-pairs
1802-number-of-students-unable-to-eat-lunch
2107-find-unique-binary-string
2255-minimum-swaps-to-group-all-1s-together-ii
2428-equal-row-and-column-pairs
2552-maximum-sum-of-distinct-subarrays-with-length-k
2581-divide-players-into-teams-of-equal-skill
2954-maximum-sum-of-almost-unique-subarray
3081-minimum-array-length-after-pair-removals
3094-minimum-number-of-operations-to-make-array-empty

Hash Table


0380-insert-delete-getrandom-o1
0381-insert-delete-getrandom-o1-duplicates-allowed
0508-most-frequent-subtree-sum
1798-max-number-of-k-sum-pairs
2107-find-unique-binary-string
2428-equal-row-and-column-pairs
2552-maximum-sum-of-distinct-subarrays-with-length-k
2581-divide-players-into-teams-of-equal-skill
2954-maximum-sum-of-almost-unique-subarray
3081-minimum-array-length-after-pair-removals
3094-minimum-number-of-operations-to-make-array-empty
3276-minimum-number-of-pushes-to-type-word-ii

Design


0225-implement-stack-using-queues
0380-insert-delete-getrandom-o1
0381-insert-delete-getrandom-o1-duplicates-allowed
0449-serialize-and-deserialize-bst
0789-kth-largest-element-in-a-stream

Randomized


0380-insert-delete-getrandom-o1
0381-insert-delete-getrandom-o1-duplicates-allowed

Tree


0107-binary-tree-level-order-traversal-ii
0109-convert-sorted-list-to-binary-search-tree
0117-populating-next-right-pointers-in-each-node-ii
0226-invert-binary-tree
0449-serialize-and-deserialize-bst
0508-most-frequent-subtree-sum
0515-find-largest-value-in-each-tree-row
0530-minimum-absolute-difference-in-bst
0538-convert-bst-to-greater-tree
0606-construct-string-from-binary-tree
0623-add-one-row-to-tree
0637-average-of-levels-in-binary-tree
0655-print-binary-tree
0789-kth-largest-element-in-a-stream
0799-minimum-distance-between-bst-nodes
1114-binary-search-tree-to-greater-sum-tree
1116-maximum-level-sum-of-a-binary-tree
1544-count-good-nodes-in-binary-tree
1731-even-odd-tree

Depth-First Search


0117-populating-next-right-pointers-in-each-node-ii
0226-invert-binary-tree
0449-serialize-and-deserialize-bst
0508-most-frequent-subtree-sum
0515-find-largest-value-in-each-tree-row
0530-minimum-absolute-difference-in-bst
0538-convert-bst-to-greater-tree
0606-construct-string-from-binary-tree
0623-add-one-row-to-tree
0637-average-of-levels-in-binary-tree
0655-print-binary-tree
0799-minimum-distance-between-bst-nodes
1114-binary-search-tree-to-greater-sum-tree
1116-maximum-level-sum-of-a-binary-tree
1544-count-good-nodes-in-binary-tree

Breadth-First Search


0107-binary-tree-level-order-traversal-ii
0117-populating-next-right-pointers-in-each-node-ii
0226-invert-binary-tree
0449-serialize-and-deserialize-bst
0515-find-largest-value-in-each-tree-row
0530-minimum-absolute-difference-in-bst
0623-add-one-row-to-tree
0637-average-of-levels-in-binary-tree
0655-print-binary-tree
0799-minimum-distance-between-bst-nodes
1116-maximum-level-sum-of-a-binary-tree
1544-count-good-nodes-in-binary-tree
1731-even-odd-tree

Binary Search Tree


0109-convert-sorted-list-to-binary-search-tree
0153-find-minimum-in-rotated-sorted-array
0449-serialize-and-deserialize-bst
0530-minimum-absolute-difference-in-bst
0538-convert-bst-to-greater-tree
0789-kth-largest-element-in-a-stream
0799-minimum-distance-between-bst-nodes
1046-max-consecutive-ones-iii
1114-binary-search-tree-to-greater-sum-tree
1615-range-sum-of-sorted-subarray-sums
3081-minimum-array-length-after-pair-removals

Binary Tree


0107-binary-tree-level-order-traversal-ii
0109-convert-sorted-list-to-binary-search-tree
0117-populating-next-right-pointers-in-each-node-ii
0226-invert-binary-tree
0449-serialize-and-deserialize-bst
0508-most-frequent-subtree-sum
0515-find-largest-value-in-each-tree-row
0530-minimum-absolute-difference-in-bst
0538-convert-bst-to-greater-tree
0606-construct-string-from-binary-tree
0623-add-one-row-to-tree
0637-average-of-levels-in-binary-tree
0655-print-binary-tree
0789-kth-largest-element-in-a-stream
0799-minimum-distance-between-bst-nodes
1114-binary-search-tree-to-greater-sum-tree
1116-maximum-level-sum-of-a-binary-tree
1544-count-good-nodes-in-binary-tree
1731-even-odd-tree

Linked List


0109-convert-sorted-list-to-binary-search-tree
0117-populating-next-right-pointers-in-each-node-ii

Sliding Window


1046-max-consecutive-ones-iii
1445-number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold
2255-minimum-swaps-to-group-all-1s-together-ii
2552-maximum-sum-of-distinct-subarrays-with-length-k
2954-maximum-sum-of-almost-unique-subarray

Two Pointers


0827-expressive-words
1615-range-sum-of-sorted-subarray-sums
1798-max-number-of-k-sum-pairs
2581-divide-players-into-teams-of-equal-skill
3081-minimum-array-length-after-pair-removals

String


0449-serialize-and-deserialize-bst
0592-fraction-addition-and-subtraction
0606-construct-string-from-binary-tree
0827-expressive-words
2107-find-unique-binary-string
3276-minimum-number-of-pushes-to-type-word-ii

Backtracking


0040-combination-sum-ii
2107-find-unique-binary-string

Greedy


0624-maximum-distance-in-arrays
3081-minimum-array-length-after-pair-removals
3094-minimum-number-of-operations-to-make-array-empty
3276-minimum-number-of-pushes-to-type-word-ii

Counting


3081-minimum-array-length-after-pair-removals
3094-minimum-number-of-operations-to-make-array-empty
3276-minimum-number-of-pushes-to-type-word-ii

Sorting


0215-kth-largest-element-in-an-array
1615-range-sum-of-sorted-subarray-sums
1798-max-number-of-k-sum-pairs
2581-divide-players-into-teams-of-equal-skill
3276-minimum-number-of-pushes-to-type-word-ii

Divide and Conquer


0109-convert-sorted-list-to-binary-search-tree
0215-kth-largest-element-in-an-array

Heap (Priority Queue)


0215-kth-largest-element-in-an-array
0789-kth-largest-element-in-a-stream

Quickselect


0215-kth-largest-element-in-an-array

Matrix


2428-equal-row-and-column-pairs

Simulation


0592-fraction-addition-and-subtraction
1802-number-of-students-unable-to-eat-lunch
2428-equal-row-and-column-pairs

Prefix Sum


1046-max-consecutive-ones-iii

Stack


0225-implement-stack-using-queues
1802-number-of-students-unable-to-eat-lunch

Queue


0225-implement-stack-using-queues
1802-number-of-students-unable-to-eat-lunch

Data Stream


0789-kth-largest-element-in-a-stream

Bit Manipulation


0476-number-complement

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cpp_dsa's Introduction

LeetCode Topics

Math

Number Theory

Array

Hash Table

Design

Randomized

Tree

Depth-First Search

Breadth-First Search

Binary Search Tree

Binary Tree

Linked List

Sliding Window

Two Pointers

String

Backtracking

Greedy

Counting

Sorting

Divide and Conquer

Heap (Priority Queue)

Quickselect

Matrix

Simulation

Prefix Sum

Stack

Queue

Data Stream

Bit Manipulation

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