Data Structures
Arrays [657]
Strings [513]
Hash [176]
Tree [127]
Matrix [118]
Graph [88]
Stack [80]
Queue [43]
Heap [36]
Map [27]

Algorithms
Bit Magic [135]
Searching [120]
Numbers [51]
Greedy [45]
DFS [37]
sieve [34]
BFS [24]

Languages
Java [93]
CPP [67]

Others
STL [130]
Misc [41]
Class [4]