: Most languages start counting at 0. To access the first item, you use index 0 , the second use 1 , and so on. Fixed vs. Dynamic Size :
: To find a specific value, you typically have to check every item one by one unless the data is already sorted. Helpful Array Methods (JavaScript Focus) : Most languages start counting at 0
: Creates a new array containing only the items that meet a specific condition. you use index 0