public class ExerciseMethods$1\{$

$/**$

Integer method returns the maximum range between the $4$ numbers given.

intRange$(1,2,3,4)$ returns $3$

intRange$(8,6,4,2)$ returns $6$

intRange$(-1,-9,-7,-5)$ returns $8$

intRange$(7,-10,10,8)$ returns $20$

intRange$(1,1,1,1)$ returns $0$

@param num$1$ int,

@param num$2$ int,

@param num$3$ int,

@param num$4$ int,

@return the distance between the max and min numbers given.

$*/$

public static int intRange$($int num$1,$ int num$2,$ int num$3,$ int num$4)$

$\{$

$//$ Your answer here. Edit the return statement as necessary.

return $0$;$//$only here to compile, you will need to change.

$\}//$ end intRange

$/**$

Integer method returns the integer given reversed. Leading zeros do not

need to show.

intReverse$(1234)$ returns $4321$

intReverse$(0)$ returns $0$

intReverse$(50)$ returns $5$

intReverse$(-501)$ returns $-105$

@param num$1$ int,

@return the integer given in reverse order.

$*/$

public static int intReverse$($int num$)$

$\{$

$//$ Your answer here. Edit the return statement as necessary.

return $0$;$//$only here to compile, you will need to change.

$\}//$ end intReverse

$/**$

Double method returns the sum of the areas of $3$ individual triangles.

The base$/$height of each triangle are equal and are given.

$($negitives can represent location as well as dimention$)$

The formula for triangle area is $($b$*$h$)/2$ and in our case,

b $=$ h $=$ num.

threeTriangles$(1\mathrm{.}0,2\mathrm{.}0,3\mathrm{.}0)$ returns $7\mathrm{.}0$

threeTriangles$(2\mathrm{.}5,1\mathrm{.}0,3\mathrm{.}5)$ returns $9\mathrm{.}75$

threeTriangles$(-1\mathrm{.}0,-9\mathrm{.}0,-7\mathrm{.}0)$ returns $65\mathrm{.}5$

threeTriangles$(0,0,8\mathrm{.}0)$ returns $32\mathrm{.}0$

threeTriangles$(1\mathrm{.}0,1\mathrm{.}0,1\mathrm{.}0)$ returns $1\mathrm{.}5$

@param num$1$ double

@param num$2$ double

@param num$3$ double

@return the sum of the area of all three triangles.

$*/$

public static double threeTriangles$($double num$1,$ double num$2,$ double num$3)$

$\{$

$//$ Your answer here. Edit the return statement as necessary.

return $0\mathrm{.}0$;$//$only here to compile, you will need to change.

$\}//$ end threeTriangles

$/**$

$*$ Double method returns the fractional part of the number given.

$*($due to internal storage of floating point numbers, this will not

$*$ look exactly the same.$)$

$*$

$*$ fractionalPart$(3\mathrm{.}14159)$ returns $0\mathrm{.}14159$

$*$ fractionalPart$(2\mathrm{.}0)$ returns $0$

$*$ fractionalPart$(-1\mathrm{.}1)$ returns $-0\mathrm{.}1$

$*$ fractionalPart$(184\mathrm{.}9985)$ returns $0\mathrm{.}9985$

$*$

$*$ @param num double

$*$ @return The fractional part of the number.

$*/$

public static double fractionalPart$($double num$)$

$\{$

$//$ Your answer here. Edit the return statement as necessary.

return $0\mathrm{.}0$;$//$only here to compile, you will need to change.

$\}//$ end fractionalPart

$/**$

boolean method returns true if the given string ends with the same letter it

begins with, regardless of case $($false if otherwise$)$

firstLastEqual$("$Robert$")$ returns false

firstLastEqual$("$Ariana$")$ returns true

firstLastEqual$("$Taco cat"$)$ returns true

firstLastEqual$("42")$ returns false

firstLastEqual$("")$ returns false

firstLastEqual$("$Goodness$,$ clean up that dog"$)$ returns true

firstLastEqual$("$HoHOho$"))$ returns false

@param original String,

@return true if $($ignoring case$)$ the first letter is the same as the last

letter $($Not just last character$).$ False otherwise.

$*/$

public static boolean firstLastEqual$($String original$)$

$\{$

$//$ Your answer here. Edit the return statement as necessary.

return false;$//$only here to compile, you will need to change.

$\}//$ end firstLastEqual

$/**$

$*$ boolean method that returns true if the first string is shorter than the

$*$ second $($false if otherwise$)$

$*$

$*$ shorterThan$("$Robert$",$ "Robert"$)$ returns false

$*$ shorterThan$("$Robert$",$ "Susie Q$")$ returns true

$*$ shorterThan$("",$ "anything"$)$ returns true

$*$ shorterThan$("$abc$","$xyz$")$ returns false

$*$

$*$ @param s$1$ String,

$*$ @param s$2$ String,

$*$ @return true if string $1$ is shorter than string $2$

$*/$

public static boolean shorterThan$($String s$1,$ String s$2)$

$\{$

$//$ Your answer here. Edit the return statement as necessary.

return true; $//$only here to compile, you will need to change.

$\}//$ end shorterThan

$/**$

String method returns the given string reversed.

stringReverse$("$Taco Casa"$)$ returns "asaC ocaT"

stringReverse$("$what$\text{'}$s up$")$ returns $"$pu s'tahw"

stringReverse$("23\mathrm{.}9")$ returns $9\mathrm{.}32$

stringReverse$("$Platform Nine and Three$-$Quarters"$)$ returns

"sretrauQ$-$eerhT dna eniN mroftalP"

stringReverse$("")$ returns $""$

stringReverse$("87")$ returns $78$

@param s$1$ String,

@return the given string in reverse.

$*/$

public static String stringReverse$($String s$1)$

$\{$

$//$ Your answer here. Edit the return statement as necessary.

return $""$;

$\}//$ end stringReverse

$/**$

Arrays are not allowed for this exercise. Do not use StringBuilder, imports, etc.

Compile code after completing each method using the javac command.

Evaluate the results using the java command.

Ensure all tests for a method, including hidden ones, pass for credit.

Avoid hardcoding; Gradescope will validate logic with additional hidden inputs.

Ensure the code compiles without errors. The code must compile without errors to receiv