Data Structures
Arrays [816]
Strings [584]
Hash [223]
Tree [176]
Matrix [161]
Graph [132]
Queue [65]
Heap [54]
Map [35]

Algorithms
Bit Magic [172]
Searching [141]
Greedy [75]
Numbers [65]
DFS [56]
sieve [54]
BFS [37]
series [36]

Languages
CPP [201]
Java [176]

Others
OOP [8]
LCS [1]