import time
start_time = time.time()
# 注意是三重循环
for a in range(0, 1001):
for b in range(0, 1001):
for c in range(0, 1001):
if a**2 + b**2 == c**2 and a+b+c ==1000:
print("a, b, c: %d, %d, %d" % (a, b, c))
end_time = time.time()
print("elapsed: %f" % (end_time - start_time))
print("complete!")
运行结果：
a, b, c: 0, 500, 500
a, b, c: 200, 375, 425
a, b, c: 375, 200, 425
a, b, c: 500, 0, 500
elapsed: 214.583347
complete!
第二次尝试
import time
start_time = time.time()
# 注意是两重循环
for a in range(0, 1001):
for b in range(0, 1001-a):
c =1000 - a - b
if a**2 + b**2 == c**2:
print("a, b, c: %d, %d, %d" % (a, b, c))
end_time = time.time()
print("elapsed: %f" % (end_time - start_time))
print("complete!")
运行结果：
a, b, c:0, 500, 500
a, b, c:200, 375, 425
a, b, c:375, 200, 425
a, b, c:500, 0, 500
elapsed:0.182897
complete!
