Tokyo stocks rebounded sharply Thursday, snapping a five-day losing streak on bargain-hunting, with sentiment lifted by advances in U.S. and other Asian markets. The 225-issue Nikkei Stock Average ended up 548.48 points, or 1.80 percent, from Wednesday at 31,075.36. The broader Topix index finished 44.87 points, or 2.02 percent, higher…