PHP Data structure (4) direct insertion and sorting

: This article mainly introduces the PHP Data structure (4) direct insertion sorting. if you are interested in the PHP Tutorial, refer to it. Directly inserting and sorting is to insert an element to the sorted array in order of size. assume that an unordered array has N elements, insertion of N-1 times can be sorted.

For example, an unordered array with five elements will be inserted and sorted four times, for example, $ array (, 18)

First time: $ array (15) insert element 7 into the array, after sorting: $ array)

Second: $ array () insert element 43 into the array, sorted: $ array (, 43)

The third time: $ array (, 43) inserts element 22 into the array. after sorting: $ array)

The fourth time: $ array (,) inserts element 18 into the array. after sorting: $ array (7,.,), the sorting is completed.

The code is implemented as follows:

  $array[$i]){$temp=$array[$i];$j=$i;while($j>0 && $array[$j-1]>$temp){$array[$j]=$array[$j-1];$j--;}$array[$j]=$temp;}}return $array;}$arr=array(4,1,17,9,88,37,43);$res=insert_sort($arr);foreach($res as $key => $values){echo "key:".($key+1)." value:".$values."
";}?>

                                                
The above introduces the PHP Data structure (4) direct insertion sorting, including content, hope to be helpful to friends who are interested in the PHP Tutorial.