Insertion Sort，insertionsort

Insertion Sort，insertionsort

 1 php
 2 function swap(&$a, &$b){
 3     $c = $a;
 4     $a = $b;
 5     $b = $c;
 6 }
 7 
 8 # insertion sort
 9 # ascend
10 function sortInsertion(&$a){ # a is an array of numbers
11 
12     # length of a
13     $m = count($a);
14 
15     if($m ){