#multidimensional-array

[nhanthanh]

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Double pointer

Pointer 1 lưu trữ địa chỉ của biến, pointer thứ 2 lưu trữ địa chỉ của pointer 1 - double pointer.

Cách khai báo double pointer trong C++:

int **ptr;

VD:

int var = 789;    // pointer for var    

int *ptr2;    // double pointer for ptr2    

int **ptr1;    // storing address of var in ptr2    

ptr2 = &var;        // Storing address of ptr2 in ptr1    

ptr1 = &ptr2;

Multidimensional dynamic array

VD mảng 2 chiều:

int **table = new int*[rows];

for (int i = 0; i < rows; i++)

{

       table[i] = new int[cols];

}

for (int i = 0; i < rows; i++)

{

      delete[] table[i];

}

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How to: How do I Sort a Multidimensional Array in PHP

How to: How do I Sort a Multidimensional Array in PHP

How do I Sort a Multidimensional Array in PHP

I have CSV data loaded into a multidimensional array. In this way each “row” is a record and each “column” contains the same type of data. I am using the function below to load my CSV file.

function f_parse_csv($file, $longest, $delimiter) { $mdarray = array(); $file = fopen($file, "r"); while ($line = fgetcsv($file, $longest, $delimiter)) {…

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[goodanswerbiz]

Fixed How do I use arrays in C++? #dev #it #asnwer

Fixed How do I use arrays in C++? #dev #it #asnwer

How do I use arrays in C++?

C++ inherited arrays from C where they are used virtually everywhere. C++ provides abstractions that are easier to use and less error-prone (std::vector<T> since C++98 and std::array<T, n> since C++11), so the need for arrays does not arise quite as often as it does in C. However, when you read legacy code or interact with a library written in C, you should have a…

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How to: How do you add an array to another array in Ruby and not end up with a multi-dimensional result?

How do you add an array to another array in Ruby and not end up with a multi-dimensional result?

somearray = ["some", "thing"] anotherarray = ["another", "thing"] somearray.push(anotherarray.flatten!)

I expected

["some","thing","another","thing"]

Answer: How do you add an array to another array in Ruby and not end up with a multi-dimensional result?

You can just use the + operator!

irb(main):0…

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How to: How to initialize a two-dimensional array in Python?

How to: How to initialize a two-dimensional array in Python?

How to initialize a two-dimensional array in Python?

I’m beginning python and I’m trying to use a two-dimensional list, that I initially fill up with the same variable in every place. I came up with this:

def initialize_twodlist(foo): twod_list = [] new = [] for i in range (0, 10): for j in range (0, 10): new.append(foo) twod_list.append(new) new = []

It gives the desired result, but feels like…

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[sevennet-blog]

How to: How to sort an array of objects with jquery or javascript

How to: How to sort an array of objects with jquery or javascript

How to sort an array of objects with jquery or javascript

I have an array of objects:

var array = [(id, name, value),(id, name, value)]; //and so on

How do I get the array to be sorted in ascending order of the atribute name (array[i][1])?

I’ve tried to do this: array[i][1].sort(), but that doesn’t work.

Please help me!

Edit: the array can contain more than two objects! It can contain hundreds.

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[goodanswerbiz]

Fixed Sort Multi-dimensional Array by Value #dev #it #asnwer

Fixed Sort Multi-dimensional Array by Value #dev #it #asnwer

Sort Multi-dimensional Array by Value

Possible Duplicate: How do I Sort a Multidimensional Array in PHP

How can I sort this array by the value of the “order” key? Even though the values are currently sequential, they will not always be.

Array ( [0] => Array ( [hashtag] => a7e87329b5eab8578f4f1098a152d6f4 => Flower [order] => 3 ) [1] => Array ( [hashtag] => b24ce0cd392a5b0b8dedc66c25213594 =>…

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[goodanswerbiz]

Fixed How can I create a two dimensional array in JavaScript? #dev #it #asnwer

Fixed How can I create a two dimensional array in JavaScript? #dev #it #asnwer

How can I create a two dimensional array in JavaScript?

I have been reading online and some places say it isn’t possible, some say it is and then give an example and others refute the example, etc.

How do I declare a 2 dimensional array in JavaScript? (assuming it’s possible)

How would I access its members? (myArray[0][1] or myArray[0,1]?)

Thanks

Answer: How can I create a two dimensional array…

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