Smart Interviews Basic Practice Problems Rules The creator of this contest is solely responsible for setting and communicating the eligibility requirements associated with prizes awarded to participants, as well as for procurement and distribution of all prizes. The contest creator holds HackerRank harmless...
We have seen a significant reduction in the number of interviews needed in order to hire the same number of high-quality candidates. N. Alexandro IT Director The platform effectively replicates a real-world office environment, providing candidates with a glimpse of what they would encounter on the...
SQL-hackerrank-problems / basic-select.md Latest commit chhayac Update basic-select.md Jan 18, 2018 340239b·Jan 18, 2018 History History ###Revising the Select Query-1 Query all columns for all American cities in CITY with populations larger than 100,000. The CountryCode for America is ...
New techniques learnt: Trie can be used for some XOR problems. The basic idea: we build a MSB->LSB prefix Trie of all numbers; then query greedily: find an existing XOR-diff bit at each target bit index. I found a clean and easy-to-understand code on LeaderBoard, from userpedrosorio...