Big O Rule 1

 const nemo = ['nemo'];
 const everyone = ['dory','bruce', 'marlin', 'gill','bloat', 'nigel', 
 'squirt','darla', 'hank','nemo'];
 
 const large = new Array(100000).fill(nemo);

function findNemo(array) {
    let t0 = performance.now();
    for (let i = 0; i < array.length; ++i) {
        console.log('running')
        if (array[i] ==='nemo') {
            console.log('Found NEMO');
            break;
        }
    }
    let t1 = performance.now();
    console.log('Call to find Nemo took ' + (t1 - t0) + ' milliseconds');
}


findNemo(everyone);