HDU

HDU is an acronym that can refer to several entities, most notably Hangzhou Dianzi University in Zhejiang, China, and the HDU Online Judge, a competitive programming platform associated with that university.

Hangzhou Dianzi University (HDU) is a public comprehensive university located in Hangzhou, Zhejiang Province. It originated in the mid-20th century as a technical school and was later reorganized into a full university. HDU emphasizes engineering, information technology, and related disciplines, while also offering programs in business, sciences, and the humanities. The university operates multiple campuses and conducts research through various colleges and institutes.

HDU Online Judge (HDUOJ) is a widely used online platform for competitive programming run by Hangzhou Dianzi University. It provides an extensive archive of programming problems, an automated judge system, and support for languages such as C, C++, Java, and Python. The site hosts regular online contests and is popular among students and professionals for practicing algorithms and preparing for programming competitions.