Question

Create a public static method named valueG that takes an ArrayList of type Double and returns a double. This method returns the maximum result ( do not return the original value) of taking the sine of each value from the input

Answer 1

PROGRAM

import java.util.*;

//Declare main class TestStaticMethod
class TestStaticMethod
{
// Create and implement static method valueG() with ArrayList Arugment "arr"
public static double valueG(ArrayList<Double> arr)
{
Double max=Double.MIN_VALUE; // Declare double variable max with constant MIN_VALUE
System.out.print(arr); // display sine of array list
for(double i:arr) // declare foreach loop for ArrayList Object "arr"
{
if(i>max) max=i; // check condition is true then store maximum value into max

}

return max; // return max value
}

public static void main(String args[])
{
ArrayList<Double> a=new ArrayList<Double>(); // Declare ArrayList Object a of Double elements
Scanner scr=new Scanner(System.in); // Declare Scanner Object scr for reading elements
double num; // declare double variable num
int size; // declare integer variable size
System.out.print("Enter size of an Array: ");
size=scr.nextInt(); // read size of an array
System.out.println("Enter "+size+" Array Elements:");
for(int i=0;i<size;i++){
num=scr.nextDouble(); // read array elements
a.add(Math.sin(num)); // assign ArrayList Object a with sine values
}

double m=valueG(a); // calling valueG() method and stores the maximum result into m
System.out.println("\n\nMaximum: "+m); // display maximum element
}
}

OUTPUT-1

F:\>javac TestStaticMethod.java

F:\>java TestStaticMethod
Enter size of an Array: 5
Enter 5 Array Elements:
12.36
45.12
1.35
2.34
96.34
[-0.20490888331957058, 0.9076718222547393, 0.9757233578266591, 0.7184647930691263, 0.86711071009699]

Maximum: 0.9757233578266591

OUTPUT-2

F:\>java TestStaticMethod
Enter size of an Array: 10
Enter 10 Array Elements:
63.12
3.26
0.36
45.36
7.12
6
45.36
1.25
3.64
12.9
[0.28417604045984296, -0.11813085589181738, 0.35227423327508994, 0.9814153067011522, 0.7425132717958018, -0.27941549819892586, 0.9814153067011522, 0.9489846193555862, -0.47802724613534286, 0.32747443913769303]

Maximum: 0.9814153067011522