Big O Rule 2

// 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