Data Structures
Arrays [794]
Strings [569]
Hash [218]
Tree [172]
Matrix [159]
Graph [132]
Queue [65]
Heap [52]
Map [34]

Algorithms
Bit Magic [164]
Searching [138]
Greedy [75]
Numbers [65]
DFS [56]
sieve [53]
series [36]

Languages
CPP [201]
Java [175]

Others
OOP [8]