算法可视化网站：https://visualgo.net/en，通过动画展示算法实现过程

程序可视化网站：http://www.pythontutor.com/visualize.html#mode=edit，可视化程序实现过程

LeetCode：https://leetcode.com/，不用介绍了，目前已有中文版

MindHacks：http://mindhacks.cn/，刘未鹏博客

CodeVS: http://codevs.cn/，在线评测平台和算法交流社区

import time

# def condition_solution():

#     start_time = time.time()

#     for a in range(1001):

#         for b in range(1001):

#             for c in range(1001):

#                 if 1000 == a + b + c and a*a + b*b == c*c:

#                     print("a, b, c: %d, %d, %d" % (a, b, c))

#     end_time = time.time()

#     cost = end_time - start_time

#     pri# nt("cost: %f" % cost)

#

def condition_solution():

    start_time = time.time()

    for a in range(1001):

        for b in range(1001):

                c = 1000 - a - b

                if 1000 == a + b + c and a*a + b*b == c*c:

                    print("a, b, c: %d, %d, %d" % (a, b, c))

    end_time = time.time()

    cost = end_time - start_time

    print("cost: %f" % cost)

if __name__ == "__main__":

    condition_solution()