Data Structures
Arrays [663]
Strings [510]
Hash [182]
Tree [128]
Matrix [126]
Graph [92]
Stack [80]
Queue [49]
Heap [38]
Map [29]

Algorithms
Bit Magic [142]
Searching [122]
Numbers [62]
Greedy [49]
DFS [40]
sieve [38]
series [36]

Languages
Java [93]
CPP [69]

Others
STL [132]
Misc [44]
OOP [6]
subset [5]
Class [4]
Kadane [4]