Question

I am working on my java but I keep getting this one wrong.

Method Name: arrayContains Access modifier: Private Parameters: 1 integer named number Return type: boolean Purpose: This method returns a true or a false indicating if the number is present in an array or not. In order for this method to work, there must be an array already declared. Therefore, in the CLASS BLOCK, declare an array as follows: static int[] listof Numbers = {1, 2, 3, 4, 5}; The code above declares an array of integers called listofnumbers. It is declared as static so that other static methods can access it - note that all methods are static (even main). We'll go over what static means later. Rather than manually allocate the array and assign values to each element, this line of code uses an array initializer. In this case, it create an array of 5 elements, with the element values 1, 2, 3, 4, 5 going into the element at indices 0, 1, 2, 3 and 4 respectively. In the body of the method block, • Declare a boolean variable called found and initialize it to false. • Loop through the entire body of the array using a for loop o Check if number is equal to the current array element (use i). If it is, set found to true and break out of the loop.

Answer 1

Please Refer to the following code below:-

public class A3Q
{
    // Declaring array
    static int[] listOfNumbers ={1,2,3,4,5};
    private static boolean arrayContains(int n){
        // declaring found variable
        boolean found=false;
        //iterating in loop
        for(int i=0;i<5;i++){
            // if number is found set found  to true
            if (listOfNumbers[i]==n){
                found = true;
            }
        }
        // returning found
        return found;
    }
    public static void main(String[] args) {
        // Calling function to print
        System.out.println(arrayContains(4));
        System.out.println(arrayContains(6));

    }

}

Output:-

true
false

Please Refer to the images below:-

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