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 [133]
Searching [120]
Numbers [51]
Greedy [45]
DFS [37]
sieve [34]
BFS [24]

Languages
Java [92]
CPP [66]

Others
STL [129]
Misc [40]
set [10]
Class [4]
Kadane [4]