Data Structures
Arrays [667]
Strings [511]
Hash [185]
Matrix [132]
Tree [132]
Graph [96]
Stack [81]
Queue [50]
Heap [38]
Map [29]

Algorithms
Bit Magic [143]
Searching [122]
Numbers [62]
sieve [53]
Greedy [51]
DFS [42]

Languages
Java [147]
CPP [70]

Others
python [8]
OOP [6]
subset [5]