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Bubble Sort

Bubble sorting: Compare adjacent data in sequence, put small data in front and big data in the back; that is, compare the first and second numbers in the first pass, with the big number in the back and the decimal in the front, and then compare For the second and third numbers, the large number comes last and the decimal comes first. By analogy, the largest number is "rolled" to the last position; in the second pass, the second largest number is rolled to the second to last position. Position... The sorting can be completed in the n-1 (n is the number of unordered data) passes.

Dec 19, 2016 pm 01:18 PM

Bubble Sort

Three implementations of bubble sort

This article introduces: Three implementations of bubble sorting

Dec 19, 2016 pm 01:15 PM

Bubble Sort

An introduction to sorting algorithms: bubble sort

In development, it is often necessary to arrange a set of data in an orderly manner, so it is absolutely necessary to master several or even more sorting algorithms. This article introduces a simpler algorithm among the sorting algorithms: Bubble Sort

Dec 19, 2016 pm 01:13 PM

Bubble Sort

Classic sorting algorithm - Bubble sort Bubble sort

This article introduces: Classic sorting algorithm - Bubble sort Bubble sort

Dec 19, 2016 pm 01:08 PM

Bubble Sort

PHP kernel analysis (8) - zend_compile

The PHP version read here is PHP-7.1.0 RC3, and the platform for reading the code is Linux. Go back to the zend_eval_stringlZEND_API int zend_eval_stringl(char *str, size_t str_len, zval *retval_ptr, char *string_name) /* {{{ */ { ... new_o ...

Dec 19, 2016 am 11:30 AM

PHP Kernel Analysis (7) - Extension

The PHP version read here is PHP-7.1.0 RC3, and the platform for reading the code is Linux. Let's study this extension of reflection. The reflection extension directory exists in: ext/reflection. In fact, the code inside is very simple. One .h file and one .c file. Let's take a look at the .c file first, and we'll see a lot...

Dec 19, 2016 am 11:28 AM

PHP kernel analysis (6)-opcode

The PHP version read here is PHP-7.1.0 RC3, and the platform for reading the code is Linux. To view opcodephp, it first parses the source code into opcode, and then passes the opcode to zend_vm for execution. // The structure of an opcode struct _zend_op { const void *handler; // opcode ...

Dec 19, 2016 am 11:24 AM

PHP kernel analysis (5)-zval

The PHP version read here is PHP-7.1.0 RC3, and the platform for reading the code is Linux. In fact, starting from this function, it has entered the scope of the zend engine. zend_eval_string_ex(exec_direct, NULL, "Command line code", 1) actually calls Zend/zend_exec...

Dec 19, 2016 am 11:19 AM

PHP kernel analysis (4)-do_cli

The PHP version read here is PHP-7.1.0 RC3, and the platform for reading the code is linux# main has added comments to the rest of the code and posted them all (this is the simplified main function, with some irrelevant code removed section): int main(int argc, char *argv) { ... sapi_modu ...

Dec 19, 2016 am 11:12 AM

PHP kernel analysis (3) - global variables

The PHP version read here is PHP-7.1.0 RC3, and the platform for reading the code is linux. CGCG obtains the attribute value from the global compiler_global, which stores the global variables used in the compilation process. struct _zend_compiler_globals { zend_stack loop_var_stack; zen ...

Dec 19, 2016 am 11:08 AM

PHP kernel analysis (2)

The php version read here is PHP-7.1.0 RC3, and the platform for reading the code is linuxZTS. We will see that there are many places in the article: #ifdef ZTS # define CG(v) ZEND_TSRMG(compiler_globals_id, zend_compiler_globals *, v) #else # define CG(v) (compi ...

Dec 19, 2016 am 11:06 AM

PHP kernel analysis (1)

The PHP version read here is PHP-7.1.0 RC3, and the platform for reading the code is Linux. The first thing is to find the entrance to PHP. PHP has many modes, apache, php-fpm, cli mode. If I want to start, I can only start with Start with the simplest cli model

Dec 19, 2016 am 11:01 AM

Overcoming CakePHP Series 3: Adding, Deleting and Modifying Form Data

The following code is the implementation code for adding, deleting and modifying form data under Cakephp. Here is a statement. In the above example, the lastupd field in the database table was accidentally typed as lastudp. This example will be corrected.

Dec 19, 2016 am 10:53 AM