这段代码为什么增加？ C＃

Question

感谢您查看此页面。我是C＃的新手，我想知道为什么这段代码会增加值。本质上，我期望测量系统中单个粒子的速度，但是，文本文件的结果显示速度的每个值都会添加到下一个。我需要的是将速度的每个值计数到一个bin中，例如，0到0.5之间的速度计数到1进入bin 1，0.5到1.0进入bin 2，等等，然后每个值bin可以写入一个文本文件，然后我可以变成一个直方图来查看某个bin中每个速度的频率。我的一段代码如下。我非常感谢我获得的任何帮助。感谢您查看该页面。

private void computeVelocity() 
    { 
     //calc velocity of each particle for printing 
     double binSize = 0.5; 
     double velocityOfParticle = 0.0; 
     double averageSquareVelocity = 0.0; 
     int maxArrayValue = 0; 
     int binArraySize = 0; 
     int z; 
     double[] velocityArray = new double[Particle.allParticles.Count]; 

     for (int counter = 0; counter < Particle.allParticles.Count; counter++) 
     { 
      averageSquareVelocity = Particle.allParticles[counter].SquareVelocity; 
      velocityOfParticle = Math.Sqrt(averageSquareVelocity); 
      velocityArray[counter] = velocityOfParticle; 
     } 
     maxArrayValue = Convert.ToInt32(Math.Round(velocityArray.Max())); 
     binArraySize = Convert.ToInt32(Math.Round(maxArrayValue/binSize)); 
     //numberOfBins = Math.Round(maxArrayValue/binSize); 
     int [] binCountArray = new int[numberOfParticles]; 
     int incrementTerm = 0; 
     Array.Clear(binCountArray, 0, binCountArray.Length); 
     for(double counter = 0.0; counter <= maxArrayValue; counter = counter + binSize) 
     { 
      if(counter > binSize) 
      { 
       incrementTerm = incrementTerm + 1; 
      } 
      z = 0; 
      for(int i = 0; i < numberOfParticles; i++) 
      { 
       if(velocityArray[i] <= counter) 
       { 
        z++; 
       }     
      }  
      binCountArray[incrementTerm] = z; 
     } 
     foreach (var item in binCountArray) 
     { 
      VelocityValues.WriteLine(item); 
     } 
     } 

Answer 1

if(velocityArray[i] <= counter) 

这将在柜台增加了一切，而不是在柜台和过反binSize。更正（可能）：

private void computeVelocity() 
    { 
     //calc velocity of each particle for printing 
     double binSize = 0.5; 
     double velocityOfParticle = 0.0; 
     double averageSquareVelocity = 0.0; 
     int maxArrayValue = 0; 
     int binArraySize = 0; 
     int z; 
     double[] velocityArray = new double[Particle.allParticles.Count]; 

     for (int counter = 0; counter < Particle.allParticles.Count; counter++) 
     { 
      averageSquareVelocity = Particle.allParticles[counter].SquareVelocity; 
      velocityOfParticle = Math.Sqrt(averageSquareVelocity); 
      velocityArray[counter] = velocityOfParticle; 
     } 
     maxArrayValue = Convert.ToInt32(Math.Round(velocityArray.Max())); 
     binArraySize = Convert.ToInt32(Math.Round(maxArrayValue/binSize)); 
     //numberOfBins = Math.Round(maxArrayValue/binSize); 
     int [] binCountArray = new int[numberOfParticles]; 
     int incrementTerm = 0; 
     Array.Clear(binCountArray, 0, binCountArray.Length); 
     for(double counter = 0.0; counter <= maxArrayValue; counter = counter + binSize) 
     { 
      if(counter > binSize) 
      { 
       incrementTerm = incrementTerm + 1; 
      } 
      z = 0; 
      for(int i = 0; i < numberOfParticles; i++) 
      { 
       if((velocityArray[i] <= counter) && (velocityArray[i] > counter - binSize)) 
       { 
        z++; 
       }     
      }  
      binCountArray[incrementTerm] = z; 
     } 
     foreach (var item in binCountArray) 
     { 
      VelocityValues.WriteLine(item); 
     } 
     }