Who served the shortest period of time was President Grover Cleveland Chester Arthur James Garfield Richard b Hayes?

James Garfield served the shortest period of time as President, holding office for only about six and a half months in 1881 before he was assassinated. Grover Cleveland served two non-consecutive terms, Chester Arthur completed Garfield's term, and Rutherford B. Hayes served one full term. Garfield's brief presidency is marked by his struggle against political corruption and his efforts to reform the civil service.