Data Structures
Arrays [661]
Strings [510]
Hash [181]
Tree [128]
Matrix [120]
Graph [89]
Stack [80]
Queue [43]
Heap [38]
Map [28]

Algorithms
Bit Magic [141]
Searching [120]
Numbers [61]
Greedy [47]
DFS [37]
sieve [36]
series [36]

Languages
Java [93]
CPP [68]

Others
Class [4]