php选择排序

selectSort.php

function findSmall($arr){
    $small = $arr[0];
    $small_index = 0;
    for ($i=0; $i < count($arr); $i++) { 
        if($arr[$i] < $small){
            $small_index = $i;
            $small = $arr[$i];
        }
    }
    return $small_index;
}

function selectSort($arr)
{
    $newArr = [];
    $lool = count($arr);
    for ($i=0; $i < $lool; $i++) { 
        $small_index = findSmall($arr);
        // print_r(array_splice($arr,$small_index,1));
        $newArr[] = $arr[$small_index];
        unset($arr[$small_index]);
        $arr = array_values($arr);
    }
    return $newArr;
}

print_r(selectSort([1,23,1212,0,-1]));
exit;