Data Structures
Arrays [699]
Strings [526]
Hash [198]
Matrix [142]
Tree [141]
Graph [112]
Stack [89]
Queue [52]
Heap [47]
Map [32]

Algorithms
Bit Magic [148]
Searching [127]
Numbers [63]
Greedy [58]
sieve [53]
DFS [51]
BFS [31]

Languages
CPP [183]
Java [175]

Others