Data Structures
Arrays [737]
Strings [559]
Hash [212]
Tree [169]
Matrix [159]
Graph [130]
Queue [59]
Heap [50]
Map [33]

Algorithms
Bit Magic [160]
Searching [136]
Greedy [73]
Numbers [65]
DFS [56]
sieve [53]
BFS [38]
series [36]

Languages
CPP [199]
Java [175]

Others
OOP [8]