Rivalry FriendsRyo and his girlfriend love to think about challenges. One day h... 
Easy Prime!There are N numbers in an array. You will have Q queries. In eac...

Taju Kage Bunshin No JutsuNaruto Uzumaki is one of the strongest ninja of RUET (Rasengan U...

Distinct DishtingYou are given an array of N integers. Then there will be Q comma...

Itachi's ChallengeSasuke is a 12year old ninja who is very much interested in lea...

A Unique ArrayAn array is called “unique” if it has no consecutive element wit...

Another Query on StringYou are given a string S (of length n) consisting of alphabets o...

Count the ChaosImagine, you have an array of integers of size N. At each index ...

CrayonsFive friends A, B, C, D and E has come to a shop to buy crayons ...

Superman and the Buildings of DahakaTo end the longrunning feud between Superman and Goku fans rega...

Palindrome Query IYou are given a string of length L. You have Q queries. In each ...

Binary Search Tree

Fenwick Tree

Linear Data Structure

Merge Sort Tree

Palindromic Tree

Prefix Tree

Wavelet Tree
