.NET测试代码效率(时间比较方式)
在这里引入了Kernel32.dll以提高精准度. 代码如下:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
static extern bool QueryPerformanceCounter(ref long count);
[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
static extern bool QueryPerformanceFrequency(ref long count);
[STAThread]
static void Main(string[] args)
{
long count = 0;
long count1 = 0;
long freq = 0;
double result = 0;
QueryPerformanceFrequency(ref freq);
QueryPerformanceCounter(ref count);
//要测试的部分.随意举个例子,测试输出如下int数组所用的时间.----------------------
int[] array = { 0, 5, 3, 3, 3, 7, 7, 19, 13, 17, 11, 7, 7, 19, 13, 17, 11 };
foreach (int i in array)
{
Console.WriteLine(i);
}
//------------------------------------------------------------------------------
QueryPerformanceCounter(ref count1);
count = count1 - count;
result = (double)(count) / (double)freq;
Console.WriteLine("耗时: {0} 秒", result);
}