ani

<?php
/**
 * Created by PhpStorm.
 * User: emotu
 * Date: 012 12.3.2019 г.
 * Time: 10:59
 */

$array = explode(" ", readline());

while (true) {
    $line = readline();
    if ($line == "END"){
        break;
    }
    $args = explode(" ", $line);
    $cmd = $args[0];
    if ($cmd == "Insert") {
        $place = $args[1];
        $paintingNumber = $args[2];
        $array = insert($array, $place, $paintingNumber);
    } elseif ($cmd == "Switch") {
        $number1 = $args[1];
        $number2 = $args[2];
        $array = switchPlaces($array, $number1, $number2);
    } elseif ($cmd == "Hide") {
        $paintingNumberToHide = $args[1];
        $array = hide($array, $paintingNumberToHide);
    } elseif ($cmd == "Reverse") {
        $array = reverse($array);
    } elseif ($cmd == "Change") {
        $paintingNumberToChange = $args[1];
        $newNumber = $args[2];
        $array = change($array, $paintingNumberToChange, $newNumber);
    }

}

foreach ($array as $num){
    echo $num." ";
}

function insert($array, $place, $paintingNumber)
{
    $copy = [];
    if ($place < count($array) - 1) {
        for ($i = 0; $i <= $place; $i++) {
            $copy[] = $array[$i];
        }
        $copy[$place + 1] = $paintingNumber;
        for ($i = $place + 1; $i < count($array); $i++) {
            $copy[] = $array[$i];
        }
        return $copy;
    }
    return $array;
}

function switchPlaces($array, $number1, $number2)
{
    $num1Exists = false;
    $num2Exists = false;
    $num1Index = 0;
    $num2Index = 0;
    for ($i = 0; $i < count($array); $i++) {
        if ($array[$i] === $number1) {
            $num1Exists = true;
            $num1Index = $i;
        }
        if ($array[$i] === $number2) {
            $num2Exists = true;
            $num2Index = $i;
        }
    }

    if ($num1Exists && $num2Exists) {
        $temp = $array[$num1Index];
        $array[$num1Index] = $array[$num2Index];
        $array[$num2Index] = $temp;
    }
    return $array;
}

function hide($array, $paintingNumber)
{
    $indexOfNumberToRemove = -1;
    for ($i = 0; $i < count($array); $i++) {
        if ($array[$i] == $paintingNumber) {
            $indexOfNumberToRemove = $i;
        }
    }

    if ($indexOfNumberToRemove != -1) {
        $copy = [];
        for ($i = 0; $i < $indexOfNumberToRemove; $i++) {
            $copy[] = $array[$i];
        }
        for ($i = $indexOfNumberToRemove + 1; $i < count($array); $i++) {
            $copy[] = $array[$i];
        }
        return $copy;
    }
    return $array;

}


function reverse($array)
{
    $copy = [];
    for ($i = count($array) - 1; $i >= 0; $i--) {
        $copy[] = $array[$i];
    }
    return $copy;
}

function change($array, $paintingNumber, $newNumber)
{
    for ($i = 0; $i < count($array); $i++) {
        if ($array[$i] == $paintingNumber) {
            $array[$i] = $newNumber;
            break;
        }
    }
    return $array;
}