Question

Write a static method named isSorted that takes an array of real numbers as a parameter and that returns true if the list is in sorted (nondecreasing) order and false otherwise. For example, if variables named list1 and list2 refer to arrays containing {16.1, 12.3, 22.2, 14.4} and {1.5, 4.3, 7.0, 19.5, 25.1, 46.2} respectively, the calls of isSorted(list1) and isSorted(list2) should return false and true respectively. Assume the array has at least one element. A one-element array is considered to be sorted.
Test your code with the following class:
public class TestIsSorted {
public static void main(String[] args) {
double[] a1 = {16.1, 25.3, 12.2, 44.4};
double[] a2 = {1.5, 4.3, 7.0, 19.5, 25.1, 46.2};
double[] a3 = {42.0};
System.out.println(isSorted(a1)); // false
System.out.println(isSorted(a2)); // true
System.out.println(isSorted(a3)); // true
}
// your code goes here
}

Answer 1

Methods are collections of named code blocks, that are executed when called or evoked.

The isSorted method

The isSorted method written in Java, where comments are used to explain each line is as follows

//This defines the isSorted method

   public static boolean isSorted(double[] myArr){

       //This iterates through the array

       for (int i = 0; i < myArr.length - 1; i++){

           //If the current element is greater than the next

           if (myArr[i] > myArr[i + 1]) {

               //This returns false

               return false;

           }

       }

       //This returns true, if the array is sorted

       return true;

   }

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