$=\sqrt[\phantom{2}]{\frac{1}{N}{\displaystyle \underset{i=1}{\overset{N}{}}}(x_i-{)}^2}$

Where $$ is the population mean.

Write a public static method computeStandardDeviation that takes as argument a double array and returns the standard deviation computed using the elements of the array.

Assignment: Write the following method that reverses an array.

public$$static$$void$$reverseArray$($int$[]$ arr$)$

This method will reverse the array arr without using any built$-$in functions. Write a test program that prompts the user to enter an array of int, and calls that method you defined. In implementing the reverseArray method, can you find a way to reverse the array without using swap variables?

SampleRun

Enter the size of the array: $5$

Enter the elements of the array: $122345$

Original array:

$12345$

Reversed array:

$54321$

Assignment: Write the following method that reverses an array.

public$$static$$void$$reverseArray$($int$[]$ arr$)$

This method will reverse the array arr without using any built$-$in functions. Write a test program that prompts the user to enter an array of int, and calls that method you defined. In implementing the reverseArray method, can you find a way to reverse the array without using swap variables?

SampleRun

Enter the size of the array: $5$

Enter the elements of the array: $122345$

Original array:

$12345$

Reversed array:

$54321$