Leetcode-Problems

Array

0039-combination-sum
0075-sort-colors
0330-patching-array
0502-ipo
0523-continuous-subarray-sum
0648-replace-words
0853-most-profit-assigning-work
0876-hand-of-straights
0982-minimum-increment-to-make-array-unique
1016-subarray-sums-divisible-by-k
1037-minimum-number-of-k-consecutive-bit-flips
1044-find-common-characters
1137-height-checker
1138-grumpy-bookstore-owner
1217-relative-sort-array
1370-count-number-of-nice-subarrays
1605-minimum-number-of-days-to-make-m-bouquets
1675-magnetic-force-between-two-balls
2148-minimum-number-of-moves-to-seat-everyone

Backtracking

0039-combination-sum

Hash Table

0523-continuous-subarray-sum
0648-replace-words
0876-hand-of-straights
1016-subarray-sums-divisible-by-k
1044-find-common-characters
1217-relative-sort-array
1370-count-number-of-nice-subarrays

String

0648-replace-words
1044-find-common-characters

Greedy

0330-patching-array
0502-ipo
0853-most-profit-assigning-work
0876-hand-of-straights
0982-minimum-increment-to-make-array-unique
1285-balance-a-binary-search-tree
2148-minimum-number-of-moves-to-seat-everyone

Sorting

0075-sort-colors
0502-ipo
0853-most-profit-assigning-work
0876-hand-of-straights
0982-minimum-increment-to-make-array-unique
1137-height-checker
1217-relative-sort-array
1675-magnetic-force-between-two-balls
2148-minimum-number-of-moves-to-seat-everyone

Trie

0648-replace-words

Math

0523-continuous-subarray-sum
0633-sum-of-square-numbers
1370-count-number-of-nice-subarrays

Prefix Sum

0523-continuous-subarray-sum
1016-subarray-sums-divisible-by-k
1037-minimum-number-of-k-consecutive-bit-flips

Counting Sort

0982-minimum-increment-to-make-array-unique
1137-height-checker
1217-relative-sort-array

Two Pointers

0075-sort-colors
0633-sum-of-square-numbers
0853-most-profit-assigning-work

Heap (Priority Queue)

0502-ipo

Binary Search

0633-sum-of-square-numbers
0853-most-profit-assigning-work
1605-minimum-number-of-days-to-make-m-bouquets
1675-magnetic-force-between-two-balls

Sliding Window

1037-minimum-number-of-k-consecutive-bit-flips
1138-grumpy-bookstore-owner
1370-count-number-of-nice-subarrays

Bit Manipulation

1037-minimum-number-of-k-consecutive-bit-flips

Queue

1037-minimum-number-of-k-consecutive-bit-flips

Tree

1114-binary-search-tree-to-greater-sum-tree
1285-balance-a-binary-search-tree

Depth-First Search

1114-binary-search-tree-to-greater-sum-tree
1285-balance-a-binary-search-tree

Binary Search Tree

1114-binary-search-tree-to-greater-sum-tree
1285-balance-a-binary-search-tree

Binary Tree

1114-binary-search-tree-to-greater-sum-tree
1285-balance-a-binary-search-tree

Divide and Conquer

1285-balance-a-binary-search-tree

Graph

1916-find-center-of-star-graph

LeetCode Topics

Greedy

2379-maximum-total-importance-of-roads

Graph

1431-all-ancestors-of-a-node-in-a-directed-acyclic-graph
1701-remove-max-number-of-edges-to-keep-graph-fully-traversable
2379-maximum-total-importance-of-roads

Sorting

0350-intersection-of-two-arrays-ii
2379-maximum-total-importance-of-roads

Heap (Priority Queue)

2379-maximum-total-importance-of-roads

Depth-First Search

1431-all-ancestors-of-a-node-in-a-directed-acyclic-graph

Breadth-First Search

1431-all-ancestors-of-a-node-in-a-directed-acyclic-graph

Topological Sort

1431-all-ancestors-of-a-node-in-a-directed-acyclic-graph

Union Find

1701-remove-max-number-of-edges-to-keep-graph-fully-traversable

Array

0350-intersection-of-two-arrays-ii
1293-three-consecutive-odds

Hash Table

0350-intersection-of-two-arrays-ii

Two Pointers

0350-intersection-of-two-arrays-ii

Binary Search

0350-intersection-of-two-arrays-ii