Stats (ANTLR 3 Runtime 3.5.3 API)

java.lang.Object
- org.antlr.runtime.misc.Stats

```
public class Stats
extends Object
```
Stats routines needed by profiler etc... // note that these routines return 0.0 if no values exist in the X[] // which is not "correct", but it is useful so I don't generate NaN // in my output

Field Summary

Fields
Modifier and Type Field Description

static String ANTLRWORKS_DIR

Constructor Summary

Constructors
Constructor Description

Stats()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static double`	`avg(int[] X)`	Compute the sample mean
`static double`	`avg(List<Integer> X)`	Compute the sample mean
`static String`	`getAbsoluteFileName(String filename)`
`static int`	`max(int[] X)`
`static int`	`max(List<Integer> X)`
`static int`	`min(int[] X)`
`static int`	`min(List<Integer> X)`
`static double`	`stddev(int[] X)`	Compute the sample (unbiased estimator) standard deviation following: Computing Deviations: Standard Accuracy Tony F.
`static int`	`sum(int[] X)`
`static void`	`writeReport(String filename, String data)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - ANTLRWORKS_DIR
```
public static final String ANTLRWORKS_DIR
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Stats
```
public Stats()
```
- Method Detail
  - stddev
```
public static double stddev(int[] X)
```
    Compute the sample (unbiased estimator) standard deviation following: Computing Deviations: Standard Accuracy Tony F. Chan and John Gregg Lewis Stanford University Communications of ACM September 1979 of Volume 22 the ACM Number 9 The "two-pass" method from the paper; supposed to have better numerical properties than the textbook summation/sqrt. To me this looks like the textbook method, but I ain't no numerical methods guy.
  - avg
```
public static double avg(int[] X)
```
    Compute the sample mean
  - min
```
public static int min(int[] X)
```
  - max
```
public static int max(int[] X)
```
  - avg
```
public static double avg(List<Integer> X)
```
    Compute the sample mean
  - min
```
public static int min(List<Integer> X)
```
  - max
```
public static int max(List<Integer> X)
```
  - sum
```
public static int sum(int[] X)
```
  - writeReport
```
public static void writeReport(String filename,
                               String data)
                        throws IOException
```
    Throws:
    
    IOException
  - getAbsoluteFileName
```
public static String getAbsoluteFileName(String filename)
```