Data Structures
Arrays [598]
Strings [396]
Hash [157]
Matrix [112]
Tree [109]
Stack [77]
Graph [74]
Heap [37]
Queue [37]
Map [26]

Algorithms
Bit Magic [120]
Numbers [47]
Greedy [43]
DFS [33]
sieve [31]

Languages
CPP [50]
Java [36]

Others
STL [125]
Misc [40]
set [10]
subset [6]
OOP [6]