Lab0

java.lang.Object
- eecs2030.lab0.Lab0

```
public class Lab0
extends Object
```
Short methods reviewing fundamental Java concepts covered in EECS1021, EECS1022, and EECS1720

Author:

EECS2030 Fall 2019-2020

Field Summary

Fields
Modifier and Type Field and Description

static String COURSE_NAME
The course name for EECS2030.

Fields
Modifier and Type	Field and Description
`static String`	`COURSE_NAME` The course name for EECS2030.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static String`	`alternatingCaps(String s)` Returns the string formed by alternating the case of the characters in the specified string.
`static double`	`avg(int a, int b)` Compute the average of two values as a `double` value.
`static int`	`compareTo(Range r1, Range r2)` Compares two `Range` instances by their widths.
`static int`	`contains(double x, Range range)` Determine if a value `x` is strictly inside the given `Range`.
`static int`	`flipBit(int x)` Returns the result of flipping the specified bit.
`static String`	`getCourseName()` Returns the course name as the string.
`static boolean`	`isInsideUnitSquare(double x, double y)` Determine if the point `(x, y)` is inside the unit square.
`static boolean`	`isOdd(int x)` Determine if an integer `x` is odd.
`static boolean`	`isOnUnitCircle(double x, double y)` Determine if the point `(x, y)` is exactly on the perimeter of a circle with center `(0, 0)` and having radius equal to `1`.
`static boolean`	`isOutsideUnitSquare(double x, double y)` Determine if the point `(x, y)` is outside the unit square.
`static int`	`lastTwoDigits(int n)` Returns the last two digits of a positive integer base-10 number.
`static int`	`maxInt()` Returns the maximum (most positive) value that an `int` can represent.
`static char`	`middleChar(String s)` Returns the character located in the middle of the string.
`static double`	`minDouble()` Returns the minimum positive value greater than zero that a `double` can represent.
`static int`	`removeLastTwoDigits(int n)` Removes the last two digits of a positive integer base-10 number.
`static String`	`toString(Range r)` Returns a string representation of a `Range` that is different than the one returned by `Range.toString`.
`static double`	`windChill(double airTemp, double windSpeed)` Returns the wind chill for air temperatures equal to or below 0 degrees Celcius and wind velocities equal to or greater than 5 km/h.

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

- Field Detail
  - COURSE_NAME
```
public static final String COURSE_NAME
```
    The course name for EECS2030.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - maxInt
```
public static int maxInt()
```
    Returns the maximum (most positive) value that an int can represent.
    
    Returns:
    
    the maximum (most positive) value that an int can represent
  - minDouble
```
public static double minDouble()
```
    Returns the minimum positive value greater than zero that a double can represent.
    
    Returns:
    
    the minimum positive value greater than zero that a double can represent
  - removeLastTwoDigits
```
public static int removeLastTwoDigits(int n)
```
    Removes the last two digits of a positive integer base-10 number. If n is less than 100 then the value of 0 is returned.
    
    Parameters:
    
    n - a positive integer
    
    Returns:
    
    the integer produced by removing the last two digits of n, or 0 if n is less than 100
  - lastTwoDigits
```
public static int lastTwoDigits(int n)
```
    Returns the last two digits of a positive integer base-10 number. If the second last digit is a 0 then only the last digit is returned. If n is less than 100 then the value of n is returned.
    
    Parameters:
    
    n - a positive integer
    
    Returns:
    
    the last two digits of n, or the last digit of n if the second last digit is a 0
  - avg
```
public static double avg(int a,
                         int b)
```
    Compute the average of two values as a double value.
    
    Parameters:
    
    a - a value
    
    b - a second value
    
    Returns:
    
    the average of the two values
  - windChill
```
public static double windChill(double airTemp,
                               double windSpeed)
```
    Returns the wind chill for air temperatures equal to or below 0 degrees Celcius and wind velocities equal to or greater than 5 km/h.
    Wind chill is an index that indicates how cold the weather feels to the average person when there is some wind. For example, if the air temperature is -5 degrees Celcius and the wind chill is -15 then it means that it feels similar to a windless day where the temperature is -15 degrees Celcius.
    
    Parameters:
    
    airTemp - the temperature in degrees Celcius (must be 0 degrees or less)
    
    windSpeed - the wind speed in km/h (must be 5 km/h or greater)
    
    Returns:
    
    the wind chill index
    
    See Also:
    
    Environment and Climate Change Canada wind chill definition
  - isOdd
```
public static boolean isOdd(int x)
```
    Determine if an integer x is odd.
    
    Parameters:
    
    x - a value
    
    Returns:
    
    true if x is odd and false otherwise
  - isOnUnitCircle
```
public static boolean isOnUnitCircle(double x,
                                     double y)
```
    Determine if the point (x, y) is exactly on the perimeter of a circle with center (0, 0) and having radius equal to 1.
    
    Parameters:
    
    x - the x-coordinate of the point
    
    y - the y-coordinate of the point
    
    Returns:
    
    true if (x, y) is exactly on the perimeter of the unit circle, and false otherwise
  - isInsideUnitSquare
```
public static boolean isInsideUnitSquare(double x,
                                         double y)
```
    Determine if the point (x, y) is inside the unit square. The unit square is the square whose sides have length 1, whose bottom left corner has coordinates (0, 0), and whose top right corner has coordinates (1, 1). A point on the perimeter of the unit square is considered to be inside the square.
    
    Parameters:
    
    x - the x-coordinate of the point
    
    y - the y-coordinate of the point
    
    Returns:
    
    true if (x, y) is inside the unit square, and false otherwise
  - isOutsideUnitSquare
```
public static boolean isOutsideUnitSquare(double x,
                                          double y)
```
    Determine if the point (x, y) is outside the unit square. The unit square is the square whose sides have length 1, whose bottom left corner has coordinates (0, 0), and whose top right corner has coordinates (1, 1). A point on the perimeter of the unit square is considered to be inside the square.
    
    Parameters:
    
    x - the x-coordinate of the point
    
    y - the y-coordinate of the point
    
    Returns:
    
    true if (x, y) is outside the unit square, and false otherwise
  - flipBit
```
public static int flipBit(int x)
```
    Returns the result of flipping the specified bit.
    A bit is the digit used in the binary number system. A bit can have a value of zero or one (with no other value allowed). Flipping a bit changes the value of the bit to the other value; flipping a bit that is zero changes it to one, and flipping a bit that is one changes it to zero.
    
    Parameters:
    
    x - a bit
    
    Returns:
    
    the flipped value of x
    
    Throws:
    
    BadBitException - if x is not a bit (has a value that is not zero and not one).
  - contains
```
public static int contains(double x,
                           Range range)
```
    Determine if a value x is strictly inside the given Range. A value exactly at the minimum or maximum of the range is considered outside of the range.
    
    Parameters:
    
    x - a value
    
    range - a Range to check
    
    Returns:
    
    the value 1 if x is strictly inside the given Range, and 0 otherwise
  - compareTo
```
public static int compareTo(Range r1,
                            Range r2)
```
    Compares two Range instances by their widths.
    
    Parameters:
    
    r1 - a Range
    
    r2 - a second Range
    
    Returns:
    
    the value 0 if both Range instances have equal width; -1 if r1 is narrower than r2; and 1 if r1 is wider than r2
  - getCourseName
```
public static String getCourseName()
```
    Returns the course name as the string.
    
    Returns:
    
    the string equal to Lab0.COURSE_NAME
  - toString
```
public static String toString(Range r)
```
    Returns a string representation of a Range that is different than the one returned by Range.toString.
    The returned string has the form "range from x to y" where x is the minimum value of the range and y is the maximum value of the range.
    
    Parameters:
    
    r - a Range instance
    
    Returns:
    
    a string representation of the range
  - middleChar
```
public static char middleChar(String s)
```
    Returns the character located in the middle of the string. If s has an even number of characters then the middle character is taken to be the first character in the second half of the string (i.e., the middle character of the string "abcd" is 'c'.
    
    Parameters:
    
    s - a string of length 1 or greater
    
    Returns:
    
    the middle character of s
    
    Throws:
    
    IllegalArgumentException - if s is empty
  - alternatingCaps
```
public static String alternatingCaps(String s)
```
    Returns the string formed by alternating the case of the characters in the specified string. The first character in the returned string is in lowercase, the second character is in uppercase, the third character is in lowercase, the fourth character is in uppercase, and so on. Examples:
    - alternatingCaps("a") returns "a"
    - alternatingCaps("ab") returns "aB"
    - alternatingCaps("abc") returns "aBc"
    - alternatingCaps("XYZ") returns "xYz"
    - alternatingCaps("Toronto") returns "tOrOnTo"
    - alternatingCaps("eecs2030") returns "eEcS2030"
    The conversion of characters to lower or uppercase is identical to that performed by the methods Character.toLowerCase(int) and Character.toLowerCase(int)
    Parameters:
    
    s - a string
    
    Returns:
    
    the string formed by alternating the case of the characters in s

Class Lab0

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

COURSE_NAME

Method Detail

maxInt

minDouble

removeLastTwoDigits

lastTwoDigits

avg

windChill

isOdd

isOnUnitCircle

isInsideUnitSquare

isOutsideUnitSquare

flipBit

contains

compareTo

getCourseName

toString

middleChar

alternatingCaps