array flatten

Arrays are frequently encountered in array operations, and we often need a single-layer array.That is [1,2,[3,4,[5,[6,[7]]]] = = = [1, 2, 3, 4, 5, 6, 7], which we call the flat processing of the array.Method OneIf it's an array of pure numbers (you can also try a string), you can take advantage of the simple ToString and split methodsvar arr = [1, ' A ', [3, ' 4 ', [' B ', [6,[7]]]]]console.log (arr.tostrin

$ Aarray ( #39; 01 #39; gt; array ( #39; count #39; gt; 1, #39; amount #39; gt; 100, #39; cesgu #39; gt; 33), #39; 02 #39; gt; array ( #39; count #39; gt; 2, #39; amount #39; gt; 200), #39; 03 #39; gt; array ( #39; count #39; gt; 3, #39; amount #39; reference array merging php

PHP implements a method of searching one-dimensional array elements and removing the corresponding elements of a two-dimensional array, a two-dimensional array of dimensions In this paper, we describe a method that PHP implements to search one-dimensional array elements and delete the corresponding elements of a two-d

It is well known that merging two arrays can use Array_merge (), which is a function provided by PHP. It is also possible array+"> to merge arrays by array, which is directly different from each other, which one is more efficient? Array_merge () Format: array array_merge (arrayarray1[,array">array1[,

Php: php array. Php is used to obtain the value of the first array element in an array element. The php array example in this article describes how php can obtain the value of the first array element in an array element. We will s

There are two arrays: {code ...} how to sort the second array by the key value of the first array, that is, the second array is changed to id, name, identityId... use the system function. thank you for the following two arrays: Array (size = 6) 0 => string 'id' (length = 2) 1 => string 'name' (length = 4) 2 => string

Methods for judging array equality in PHP and introduction to array operators, array operators How can I tell if two arrays are equal? Actually very simple, with = = or = = = can beThe PHP manual explains the following: Can a multidimensional array such as Array (' K ' =>

I. Introduction to three methods of array Traversal 1. foreach () Foreach () is the simplest and most effective way to traverse data in an array. # Example1:Copy codeThe Code is as follows:$ Colors = array ('red', 'blue', 'green', 'yellow ');Foreach ($ colorsas $ color ){Echo "Do you like $ color? }?>Display result: Do you like red?Do you like blue?Do you like gr

//Main.m1-19 Course NotesTwo-dimensional arrays, string arrays, multidimensional arraysLecturer: Xiao HuiAuthor: Wang XuewenCreated by Lanouhn on 15/1/19.Copyright (c) 2015 Lanouhn. All rights reserved.//#import int main (int argc, const char * argv[]) {/*One-dimensional arraysint a[10] = {1, 2, 3, 4, 5};Two-dimensional array, one dimension more than one-dimensional array (one more element subscript)int b[2

Arrayarray_slice (array $ array, int $ offset [, int $ lengthNULL [, bool $ preserve_keysfalse]) function: extracts a subarray sequence from an array. Description: array_slice () is returned based on offset and leng. array array_slice ( array $

Java Implementation: obtain the largest sum (array) of the sub-array and the java Array Returns the largest sum of sub-arrays (arrays) Question:Enter an integer array, and the array contains positive and negative numbers. One or more consecutive integers in the

Sort by (enumeration)1 Public enum SortBy 2 {3 Asc,4 Desc5 }View CodeArray Bubble Sort method1 Public classsortentity2 {3 Public Static int[] Sortarray (int[] array,sortby sortby)4 {5 intFlag;6 Switch(SortBy)7 {8 CaseSORTBY.ASC:9 for(inti =0; I 1; i++)Ten { One for(intj =0; J 1I J + +) A

one, 3 methods of array traversal introduction 1. foreach () foreach () is the simplest and most efficient way to iterate through the data in an array. #example1:Copy the Code code as follows:$colors = Array (' Red ', ' blue ', ' green ', ' yellow ');foreach ($colorsas $color) {echo "Do $color?"";}?>Show Results: Like red?Do you like blue?Do you like green?Do yo

Introduction to 3 Methods of array traversal 1. foreach () foreach () is the simplest and most efficient way to traverse the data in an array. #example1: Copy Code code as follows: $colors = Array (' Red ', ' blue ', ' green ', ' yellow '); foreach ($colorsas $color) { echo "Do you like $color? } ?> Show Results: Do I like red?Do

This article mainly introduces PHP's method of converting multi-dimensional array to string and multi-dimensional array to one-dimensional array. it introduces the conversion techniques of php array and string in the form of examples, which is very simple and practical, for more information about how to convert a multi

How to change the key name of an array to the key value of the second array when the array length is the same. For example, I have $ aa .... $ bb $ aaArray nbsp; (0 nbsp; gt; cd, 1 nbsp; gt; udd, 2 gt; dsd); $ bbArray nbsp; ( nbsp; 0 nbsp; gt; nbsp; 13ds, 1 nbsp; gt; the length of the tdfe array is the same

Multi-dimensional array into one-dimensional array, multi-dimensional array dimension Convert a multi-dimensional array into a one-dimensional array: /*** @ Method Multi-dimensional array to one-dimensional

Array is the data type of the arrays in Swift. The Nsarray is the array data type in OC. There is a connection between the two. Some of the things in OC can sometimes be used in swift. Today we're going to use Nsarray and array in Swift, and convert.(1) Declare an array of arrays. and to traverse. The code is as follow

In java.util.*, arrays seems to be useful, and it seems that using the in-loop method avoids the need to write the lookup, initialization, and sequencing of the array.First, to talk about the arrays in the shape of the array really useful method1, the first is arrays.tostring ()In general, print an array directly with SYSTEM.OUT.PRINTLN (), such as this:int array

The PHP array to the JS array, JS how to receive PHP arrays, JSON usage, Jsjson First download the following file (this is a piece of code that someone else has written that specifically parses the JSON) and then introduce this file! Http://pan.baidu.com/s/1dD8qVr7 Now when we need to use Ajax to interact with the background, how to transfer the PHP array to th