4
19/10/2024 10:07 am
Início do tópico
It’s the end of the week and it is time for you to go shopping, so you need to create a shopping list first.
Input:
You will receive an initial list with groceries separated by "!".
After that you will be receiving 4 types of commands, until you receive "Go Shopping!"
- Urgent {item} - add the item at the start of the list. If the item already exists, skip this command.
- Unnecessary {item} - remove the item with the given name, only if it exists in the list. Otherwise skip this command.
- Correct {oldItem} {newItem} – if the item with the given old name exists, change its name with the new one. If it doesn't exist, skip this command.
- Rearrange {item} - if the grocery exists in the list, remove it from its current position and add it at the end of the list.
Constraints:
- There won`t be any duplicate items in the initial list
Output:
Print the list with all the groceries, joined by ", ".
- "{firstGrocery}, {secondGrocery}, …{nthGrocery}"
Examples:
1 Resposta
3
19/10/2024 10:08 am
Here is my solution to this task:
<?php
$arr = explode("!", readline());
$input = readline();
while ($input != "Go Shopping!") {
$args = explode(" ", $input);
$command = $args[0];
switch ($command) {
case 'Urgent':
$item = $args[1];
if (!in_array($item, $arr)) {
array_unshift($arr, $item);
}
break;
case 'Unnecessary':
$item = $args[1];
if (in_array($item, $arr)) {
$index1 = array_search($item, $arr);
array_splice($arr, $index1, 1);
}
break;
case 'Correct':
$item = $args[1];
if (in_array($item, $arr)) {
$index1 = array_search($item, $arr);
array_splice($arr, $index1, 1, $args[2]);
}
break;
case 'Rearrange':
$item = $args[1];
if (in_array($item, $arr)) {
$index1 = array_search($item, $arr);
array_splice($arr, $index1, 1);
array_push($arr, $item);
}
}
$input = readline();
}
echo implode(", ", $arr);
