// Big O Rule 2: drop the constants function printFirstItemThenFirstHalfThenSayHi100Times(items) { console.log(items[0]); // O(1) var middleIndex = Math.floor(items.length / 2); // O(n/2) var index = 0; while (index < middleIndex) { console.log(items[index]); index++; } for (var i - 0; i < 100; i++) { // O(100) console.log('hi'); } } // O(1 + n/2 + 100) = O(n) after dropping the constants