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You can subscript an array with any integer from zero up to, but not including, the count of the array.
One uses a bidimensional array and the other one uses a simple array: with no need to make any other modifications to the program.
At some moment we may need to pass an array to a function as a parameter.
An array is a series of elements of the same type placed in contiguous memory locations that can be individually referenced by adding an index to a unique identifier.
That means that, for example, we can store 5 values of type which represents the number of elements the array is going to hold, must be a constant value, since arrays are blocks of non-dynamic memory whose size must be determined before execution.
An array can store any kind of elements—from integers to strings to classes.
Swift makes it easy to create arrays in your code using an array literal: simply surround a comma-separated list of values with square brackets.Without any other information, Swift creates an array that includes the specified values, automatically inferring the array’s You can access individual array elements through a subscript.The first element of a nonempty array is always at index zero.In C it is not possible to pass a complete block of memory by value as a parameter to a function, but we are allowed to pass its address.In practice this has almost the same effect and it is a much faster and more efficient operation.Multidimensional arrays are just an abstraction for programmers, since we can obtain the same results with a simple array just by putting a factor between its indices: With the only difference that with multidimensional arrays the compiler remembers the depth of each imaginary dimension for us.Take as example these two pieces of code, with both exactly the same result.During the registration period, you need to add and remove names as students add and drop the class.// Ben's family is moving to another state students.remove(at: 0) // ["Ivy", "Jordell", "Liam", "Maxime", "Shakia", "William"] // William is signing up for a different class students.remove Last() // ["Ivy", "Jordell", "Liam", "Maxime", "Shakia"] Every array reserves a specific amount of memory to hold its contents.When you add elements to an array and that array begins to exceed its reserved capacity, the array allocates a larger region of memory and copies its elements into the new storage.The new storage is a multiple of the old storage’s size.This exponential growth strategy means that appending an element happens in constant time, averaging the performance of many append operations.