Goal: Find the Peak Element
SYSTEM READY 
while (high - low > 2) {
  let m1 = low + Math.floor((high - low) / 3);
  let m2 = high - Math.floor((high - low) / 3);
  if (arr[m1] < arr[m2])
    low = m1; // Peak is to right of m1
  else
    high = m2; // Peak is to left of m2
}
return max(arr[low], arr[mid], arr[high]);