package hw;

import java.util.Arrays;

public class Practice $\{$

static double average$($int a$,$ int b$,$ int c$)\{$

$//$ Given three values a$,$ b$,$ c$,$ return the average value of those values.

return $0$; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static int min$($int a$,$ int b$,$ int c$)\{$

$//$ Given three values a$,$ b$,$ c$,$ return the minimum value.

return $0$; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static double Celsius$2$Fahrenheit$($int tempC$)\{$

$//$ Given a temperature in Celsius, return the corresponding temperature in Fahrenheit

return $0$; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static double Fahrenheit$2$Celsius$($double tempF$)\{$

$//$ Given a temperature in Celsius, return the corresponding temperature in Fahrenheit

return $0$; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static int FeetInch$2$Cm$($int$[]$ height$)\{$

$//$ Given a height as an int array $[$feet$,$ inch$],$ return the height in centimeter

$//$ Round the height to the nearest integer value. eg$)182\mathrm{.}6$ cm $-->183$ cm

return $0$; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static int$[]$ Cm$2$FeetInch$($int height$)\{$

$//$ Given a height in centimeter, return the height as an int array $[$feet$,$ inch$]$

$//$ Round the height to the nearest integer values inches.

return null; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static char charAfer$($char ch$,$ int n$)\{$

$//$ Return the n$-$th character after the given character ch in ASCII order.

$//$ eg$)$ charAfer$(\text{'}$a$\text{'},1)$ returns $\text{'}$b$\text{'},$ charAfer$(\text{'}$a$\text{'},2)$ returns $\text{'}$c$\text{'},$ charAfer$(\text{'}1\text{'},3)$ returns $\text{'}4\text{'}$

return $0$; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static boolean isBetween$($int$[]$ interval, int val$)\{$

$//$ Given an int array interval $=[$x$1,$ x$2],$

$//$ Return true if val is between x$1$ and x$2($inclusively$).$ Return false otherwise

$//$ Assume x$1<=$ x$2$

return false; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static boolean overlap$($int$[]$ interval$1,$ int$[]$ interval$2)\{$

$//$ Return true if the two intervals overlap. Return false otherwise.

$//$ Return true if they have any value in common.

$//[1,3]$ and $[3,6]$ are overlapping

$//$ Assume each interval has two values sorted. eg$)$ interval$[0]<=$ interval$[1]$

return false; $//$ dummy to avoid syntax error. Change this as needed

$\}$

static double areaTriangle$($double a$,$ double b$,$ double c$)\{$

$//$ Given three sides of a triangle, return its area.

$//$ If any one side is equal or greater than the sum of the other two, it is invalid. Return $-1\mathrm{.}0$ in such case

$//$ eg$)$ areaTriangle$(1,2,3)$ returns $-1\mathrm{.}0$

return $0$; $//$ dummy to avoid syntax error. Change this as needed

$\}$

public static void main$($String$[]$ args$)\{$

System.out.println$("$testing average$()")$;

System.out.println$($average$(1,2,3))$; $//2\mathrm{.}0$

System.out.println$($average$(1,2,10))$; $//4\mathrm{.}333333333333333$

System.out.println$($average$(-2,-5,1))$; $//-2\mathrm{.}0$

System.out.println$("$testing min$()")$;

System.out.println$($min$(2,5,1))$; $//1$

System.out.println$($min$(-2,5,1))$; $//-2$

System.out.println$($min$(-2,-5,1))$; $//-5$

System.out.println$("$testing Celsius$2$Fahrenheit$()")$;

System.out.println$($Celsius$2$Fahrenheit$(0))$; $//32\mathrm{.}0$

System.out.println$($Celsius$2$Fahrenheit$(100))$; $//212\mathrm{.}0$

System.out.println$($Celsius$2$Fahrenheit$(-10))$; $//14\mathrm{.}0$

System.out.println$("$testing Fahrenheit$2$Celsius$()")$;

System.out.println$($Fahrenheit$2$Celsius$(32))$; $//0\mathrm{.}0$

System.out.println$($Fahrenheit$2$Celsius$(-10))$; $//-23\mathrm{.}333333333333332$

System.out.println$($Fahrenheit$2$Celsius$(100))$; $//37\mathrm{.}77777777777778$

System.out.println$($Fahrenheit$2$Celsius$($Celsius$2$Fahrenheit$(35)))$; $//35\mathrm{.}0$

System.out.println$("$testing FeetInch$2$Cm$()")$;

System.out.println$($FeetInch$2$Cm$($new int$[]\{6,2\}))$; $//188$

System.out.println$($FeetInch$2$Cm$($new int$[]\{5,5\}))$; $//165$

System.out.println$($FeetInch$2$Cm$($new int$[]\{7,4\}))$; $//224$

System.out.println$("$testing Cm$2$FeetInch$()")$;

System.out.println$($Arrays$.$toString$($Cm$2$FeetInch$(188)))$; $//[6,2]$

System.out.println$($Arrays$.$toString$($Cm$2$FeetInch$(165)))$; $//[5,5]$

System.out.println$($Arrays$.$toString$($Cm$2$FeetInch$(225)))$; $//[7,5]$

System.out.println$($FeetInch$2$Cm$($Cm$2$FeetInch$(170)))$; $//170$

System.out.println$("$testing charAfer$()")$;

System.out.println$($charAfer$(\text{'}$a$\text{'},1))$; $//$ b

System.out.println$($charAfer$(\text{'}$a$\text{'},0))$; $//$ a

System.out.println$($charAfer$(\text{'}$a$\text{'},10))$; $//$ k

System.out.println$($charAfer$(\text{'}0\text{'},5))$; $//5$

System.out.println$($charAfer$(\text{'}$B$\text{'},40))$; $//$ j

System.out.println$("$testing isBetween$()")$;

System.out.println$($isBet