Respuesta :
The numbers in the list are stored in the array in order and the value assigned by: days[3] =30.
An object that stores numerous values of the same kind is called an array. One value makes up an element of an array. An integer that designates a spot in an array is called an array index. Similar to how Strings employ zero-based indexing, array indexes begin with 0. The next example shows the values and indices of an array with 10 int-type entries.
index 0 1 2 3 4 5 6 7 8 9
value 13 8 0 -2 9 89 -6 84 88 3
The syntax for declaring an array is:
type[ ] variable; This does not really generate the array; it only declares a variable that can carry an array. For instance, we might use: to declare a variable called numbers that may store an array of integers.
int[] numbers;
The following syntax is used to store a value in an array element:
variable[index] = expression;
For example:
numbers[0] = 99;
numbers[3] = -1;
would change the numbers array to:
index 0 1 2 3 4 5 6 7 8 9
value 99 0 0 -1 0 0 0 0 0 0
Accessing an element of an array uses the following syntax:
variable[index] ; where any expression that yields an int can be used as the index.
Each element of the array has a default starting value when it is declared. The default value for integers is 0.
To learn more about Arrays click here:
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