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BubbleSort.php
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59 lines (56 loc) · 1.45 KB
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<?php
/**
* @example 冒泡排序
* @author ShaoWei Pu <[email protected]>
* @date 2017/6/16
* @license Mozilla
* -------------------------------------------------------------
* 思路分析:就是像冒泡一样,每次从数组当中 冒一个最大的数出来。
* -------------------------------------------------------------
* 你可以这样理解:(从小到大排序)存在10个不同大小的气泡,
* 由底至上的把较少的气泡逐步地向上升,这样经过遍历一次后最小的气泡就会被上升到顶(下标为0)
* 然后再从底至上地这样升,循环直至十个气泡大小有序。
* 在冒泡排序中,最重要的思想是两两比较,将两者较少的升上去
*/
/**
* @param array $container
* @return array
*/
function BubbleSort( array $container ) {
$count = count($container);
for ( $j = 1; $j < $count; $j++ ) {
for ( $i = 0; $i < $count - $j; $i++ ) {
if ( $container[$i] > $container[$i + 1] ) {
$temp = $container[$i];
$container[$i] = $container[$i+1];
$container[$i+1] = $temp;
}
}
}
return $container;
}
var_dump( BubbleSort([4,21,41,2,53,1,213,31,21,423]) );
/*
array(10) {
[0] =>
int(1)
[1] =>
int(2)
[2] =>
int(4)
[3] =>
int(21)
[4] =>
int(21)
[5] =>
int(41)
[6] =>
int(41)
[7] =>
int(53)
[8] =>
int(213)
[9] =>
int(423)
}
*/