Data Structures
Arrays [655]
Strings [510]
Hash [181]
Tree [128]
Matrix [119]
Graph [89]
Stack [80]
Queue [43]
Heap [36]
Map [27]

Algorithms
Bit Magic [137]
Searching [119]
Numbers [57]
Greedy [47]
DFS [37]
sieve [36]
series [34]

Languages
Java [93]
CPP [68]

Others
STL [131]
Misc [42]
Class [4]