Data Structures
Arrays [469]
Strings [333]
Tree [138]
Hash [114]
Matrix [89]
Graph [63]
Stack [49]
Queue [26]
Map [23]
Heap [19]
Trie [7]

Algorithms
Bit Magic [100]
Sorting [98]
Numbers [47]
Greedy [45]
series [28]
DFS [26]

Languages
Java [510]
CPP [192]
C [95]
SQL [62]
CSharp [19]
PHP [7]
HTML [5]
XML [4]
Perl [1]

Others
Puzzles [63]
Misc [62]
STL [45]
Linux [40]
memory [10]
Hadoop [6]
Spring [6]
Sqoop [1]
parser [1]
UML [1]