不用api函数,实现数组的交换排序
不用api函数,实现数组的交换排序 无 $arr = array(900 , 20 , 16 , 50 , -2 , 10 , 3);$min = $max = 0;for ($j=0;$jcount($arr);$j++){for($i=0;$icount($arr)-1;$i++){if($arr[$i] $arr[$i+1]){$min = $arr[$i+1];$arr[$i+1] = $arr[$i];$arr[$i] = $min;}
不用api函数,实现数组的交换排序
$arr = array(900 , 20 , 16 , 50 , -2 , 10 , 3); $min = $max = 0; for ($j=0;$j<count($arr);$j++){ for($i=0;$i<count($arr)-1;$i++){ if($arr[$i] > $arr[$i+1]){ $min = $arr[$i+1]; $arr[$i+1] = $arr[$i]; $arr[$i] = $min; } } echo "当前数组为:";print_r($arr);echo "<br/>"; }

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

1. The SUM function is used to sum the numbers in a column or a group of cells, for example: =SUM(A1:J10). 2. The AVERAGE function is used to calculate the average of the numbers in a column or a group of cells, for example: =AVERAGE(A1:A10). 3. COUNT function, used to count the number of numbers or text in a column or a group of cells, for example: =COUNT(A1:A10) 4. IF function, used to make logical judgments based on specified conditions and return the corresponding result.

The performance comparison of PHP array key value flipping methods shows that the array_flip() function performs better than the for loop in large arrays (more than 1 million elements) and takes less time. The for loop method of manually flipping key values takes a relatively long time.

Methods for deep copying arrays in PHP include: JSON encoding and decoding using json_decode and json_encode. Use array_map and clone to make deep copies of keys and values. Use serialize and unserialize for serialization and deserialization.

PHP's array_group_by function can group elements in an array based on keys or closure functions, returning an associative array where the key is the group name and the value is an array of elements belonging to the group.

PHP's array_group() function can be used to group an array by a specified key to find duplicate elements. This function works through the following steps: Use key_callback to specify the grouping key. Optionally use value_callback to determine grouping values. Count grouped elements and identify duplicates. Therefore, the array_group() function is very useful for finding and processing duplicate elements.

Exception handling in C++ can be enhanced through custom exception classes that provide specific error messages, contextual information, and perform custom actions based on the error type. Define an exception class inherited from std::exception to provide specific error information. Use the throw keyword to throw a custom exception. Use dynamic_cast in a try-catch block to convert the caught exception to a custom exception type. In the actual case, the open_file function throws a FileNotFoundException exception. Catching and handling the exception can provide a more specific error message.

Three common algorithms for exchanging array key values in PHP have their own advantages and disadvantages: array_flip(): simple and efficient, but the values must be unique and cannot handle multi-dimensional arrays. Manual traversal: can handle multi-dimensional arrays and control exceptions, but the code is longer and less efficient. ksort()+array_keys(): can handle any type of array and control the sort order, but it is less efficient. Practical cases show that array_flip() is the most efficient, but when dealing with multi-dimensional arrays, manual traversal is more appropriate.

Yes, in many programming languages, arrays can be used as function parameters, and the function will perform operations on the data stored in it. For example, the printArray function in C++ can print the elements in an array, while the printArray function in Python can traverse the array and print its elements. Modifications made to the array by these functions are also reflected in the original array in the calling function.
