随便写写,小马哥勿怪
最近悟出来一个道理,在这儿分享给大家:学历代表你的过去,能力代表你的现在,学习代表你的将来。
十年河东十年河西,莫欺少年穷。
话说马云年轻的时候也是屌丝一枚,有图为证
现在的马云依然是亚洲首富啊(有图为证),所以嘛,十年河东十年河西,莫欺少年穷。
以上均是开玩笑,希望小马哥别生气哦
C#统计程序执行时间,代码如下:
class Program { static void Main(string[] args) { string s = "chen"; string ss = "chen"; Stopwatch sw = new Stopwatch(); sw.Start(); for (int i = 0; i < 100000000; i++) { if (s == ss) { //Console.WriteLine("字符串相同"); } else { //Console.WriteLine("字符串不相同"); } } sw.Stop(); TimeSpan ts2 = sw.Elapsed; Console.WriteLine("sw总共花费{0}ms.", ts2.TotalMilliseconds); Stopwatch sw_Eq = new Stopwatch(); sw_Eq.Start(); for (int i = 0; i < 100000000; i++) { if (s.Equals(ss)) { //Console.WriteLine("字符串相同"); } else { //Console.WriteLine("字符串不相同"); } } sw_Eq.Stop(); TimeSpan tssw_Eq = sw_Eq.Elapsed; Console.WriteLine("sw_Eq总共花费{0}ms.", tssw_Eq.TotalMilliseconds); Console.ReadKey(); } }
当然,咱们也可以自行写一个方法,很简单的,就是程序执行前,统计下当前时间,执行完成后,统计下当前时间,两个当前时间相减即可
代码如下:
class Program { static void Main(string[] args) { string s = "chen"; string ss = "chen"; Stopwatch sw = new Stopwatch(); sw.Start(); for (int i = 0; i < 100000000; i++) { if (s == ss) { //Console.WriteLine("字符串相同"); } else { //Console.WriteLine("字符串不相同"); } } sw.Stop(); TimeSpan ts2 = sw.Elapsed; Console.WriteLine("sw总共花费{0}ms.", ts2.TotalMilliseconds); Stopwatch sw_Eq = new Stopwatch(); sw_Eq.Start(); for (int i = 0; i < 100000000; i++) { if (s.Equals(ss)) { //Console.WriteLine("字符串相同"); } else { //Console.WriteLine("字符串不相同"); } } sw_Eq.Stop(); TimeSpan tssw_Eq = sw_Eq.Elapsed; Console.WriteLine("sw_Eq总共花费{0}ms.", tssw_Eq.TotalMilliseconds); DateTime beforDT = System.DateTime.Now; for (int i = 0; i < 100000000; i++) { if (s.Equals(ss)) { //Console.WriteLine("字符串相同"); } else { //Console.WriteLine("字符串不相同"); } } DateTime afterDT = System.DateTime.Now; TimeSpan ts = afterDT.Subtract(beforDT); Console.WriteLine("DateTime总共花费{0}ms.", ts.TotalMilliseconds); Console.ReadKey(); } }
执行结果图如下: