Array Site

: Using 2D arrays to represent the grid of pixels in a digital photo. Leaderboards : Keeping track of scores in a game.

: Arrays allocate a solid block of memory where each element is placed right next to the previous one. This allows the computer to calculate the location of any item instantly.

: 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) : Using 2D arrays to represent the grid

: Removing or adding elements at the beginning is slower because the computer must shift every other item to a new position.

: Fetching a value by its index is extremely fast ( time complexity). This allows the computer to calculate the location

: Creates a new array containing only the items that meet a specific condition.

Languages like JavaScript and Python use that can grow or shrink as needed. Essential Operations : Fetching a value by its index is

: 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 :