PHP涓湁澶氱鎺掑簭绠楁硶鍙互瀹炵幇锛屼互涓嬫槸甯歌鐨勫嚑绉嶆帓搴忕畻娉曠殑瀹炵幇绀轰緥锛?/p>

1. 鍐掓场鎺掑簭绠楁硶锛?/li>

function bubbleSort($arr) {
    $n = count($arr);
    for ($i = 0; $i < $n - 1; $i++) {
        for ($j = 0; $j < $n - $i - 1; $j++) {
            if ($arr[$j] > $arr[$j+1]) {
                $temp = $arr[$j];
                $arr[$j] = $arr[$j+1];
                $arr[$j+1] = $temp;
            }
        }
    }
    return $arr;
}

$arr = [5, 3, 8, 4, 2];
$result = bubbleSort($arr);
print_r($result);

2. 閫夋嫨鎺掑簭绠楁硶锛?/li>

function selectionSort($arr) {
    $n = count($arr);
    for ($i = 0; $i < $n - 1; $i++) {
        $minIndex = $i;
        for ($j = $i + 1; $j < $n; $j++) {
            if ($arr[$j] < $arr[$minIndex]) {
                $minIndex = $j;
            }
        }
        if ($minIndex != $i) {
            $temp = $arr[$i];
            $arr[$i] = $arr[$minIndex];
            $arr[$minIndex] = $temp;
        }
    }
    return $arr;
}

$arr = [5, 3, 8, 4, 2];
$result = selectionSort($arr);
print_r($result);

3. 鎻掑叆鎺掑簭绠楁硶锛?/li>

function insertionSort($arr) {
    $n = count($arr);
    for ($i = 1; $i < $n; $i++) {
        $key = $arr[$i];
        $j = $i - 1;
        while ($j >= 0 && $arr[$j] > $key) {
            $arr[$j + 1] = $arr[$j];
            $j--;
        }
        $arr[$j + 1] = $key;
    }
    return $arr;
}

$arr = [5, 3, 8, 4, 2];
$result = insertionSort($arr);
print_r($result);

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