Array 78 /123

DP: 41 / 99

String 31/ 94

Math 28 / 81

HashTable 33 / 79

Tree 42 / 77

DFS 35 / 70

Binary Search 23 /44

Two Pointer 27 / 40

BackTRacking 15 / 36

Stack 11/ 35

BFS 16 / 33

Design 9 / 33

Greedy 9 / 32

Bit 10 /30

Linked List 14 /28

Heap 13/ 22

Sort 10 / 19

Divide and Conquer 9 /14

Graph 13 / 14
Trie 4 / 14

Union Find 10 / 12

BST 1 / 11

Recursion 1 /8

Segment Tree 2 / 8

Binary Indexed Tree 2 / 5

QUeue 5 / 5