Define arrays in C # -- string and Array Operations
I. One Dimension:
Int [] numbers = new int [] {1, 2, 3, 4, 5, 6}; // Variable Length
Int [] numbers = new int [3] {1, 2, 3}; // Fixed Length
Ii. Multidimensional
Int [,] numbers = new
basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Gets the value of the array Array_keys ($arr), gets the key name of the array array_flip ($arr), and the values in the array are exchanged with the key
Use the typedef statement to define the array type
1. Definition Format of one-dimensional array type
Typedef [];
For example:
(1) typedef int vector [10];
(2) typedef char strings [80];
(3) typedef short int array [N];
The first statement
To define an array type using typedef statements1. Defining formats for one-dimensional array types typedef []; For example: (1) typedef int VECTOR[10]; (2) typedef char STRINGS[80]; (3) typedef short INT array[n]; The first statement defines an
Basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Get the value of an arrayArray_keys ($arr); Gets the key name of the arrayArray_flip ($arr); the values in the array are exchanged with the key names (if
1. Definition Format of one-dimensional array typeTypedef [];For example:(1) typedef int vector [10];(2) typedef char strings [80];(3) typedef short int array [N];The first statementDefines an array type vector whose element type is int and
forum-20160919104018">forum-20160919104018">The array in PHP is actually an ordered map. A map is a type that associates values to the keys. This type is optimized in many ways, so it can be used as a real array, or as a list (vector), a hash (an
Js arrays have various operations. Next I will introduce how to clear, define, and delete js arrays, and also introduce array sorting. You are welcome to refer to them.
Let's take a look at how to clear the js array.
When an array needs to be
Some php array learning notes. There are three types of php arrays: a numeric array with a numeric ID key, and an ID key in an array associated with a value multi-dimensional array containing one or more arrays, there are three types of php arrays:
The difference between #define, const, typedef#define is not defining variables, it's just for text substitution.For example:#define PI 3.1415926float Angel;angel=30*pi/180;Then, when the program is compiled, the compiler will first "#define PI 3.141
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