//Initialize 2 arrays for comparison
                            let array1 = [];
                            let array2 = [];
                            let tallest = 0;

                            //Assigns each building height to a variable in array1
                            function sunsetHills() {
                                array1[0] = Number(document.getElementById("building1").value);
                                array1[1] = Number(document.getElementById("building2").value);
                                array1[2] = Number(document.getElementById("building3").value);
                                array1[3] = Number(document.getElementById("building4").value);
                                array1[4] = Number(document.getElementById("building5").value);
                                array1[5] = parseInt(document.getElementById("building6").value);

                                //Loops around array1 to find the tallest building and adding it to array2
                                for (i = 0; i <= array1.length; i++) { 
                                    if (tallest < array1[i]) { 
                                        tallest=array1[i];
                                        array2.push(array1[i]); 
                                    } 
                                } 
                                displayResults(); 
                            } 
                            //Display results in array2
                            function displayResults() {
                                document.getElementById("output").innerHTML="Only these building(s) can see the sunset: "
                                + array2; 
                            }