05. Тake/Skip Rope

Здравейте, може ли малко помощ с тая задача не мога да я довърша

1.Take/Skip Rope

Write a program, which reads a string and skips through it, extracting a hidden message. The algorithm you have to implement is as follows:

Let’s take the string "skipTest_String044170" as an example.

Take every digit from the string and store it somewhere. After that, remove all the digits from the string. After this operation, you should have two lists of items: the numbers list and the non-numbers list:

Numbers list: [0, 4, 4, 1, 7, 0]
Non-numbers: [s, k, i, p, T, e, s, t, _, S, t, r, i, n, g]

After that, take every digit in the numbers list and split it up into a take list and a skip list, depending on whether the digit is in an even or an odd index:

Numbers list: [0, 4, 4, 1, 7, 0]
Take list: [0, 4, 7]
Skip list: [4, 1, 0]

Afterwards, iterate over both of the lists and take {takeCount} characters and store it in a result string, then skip {skipCount} characters from the non-numbers list, Note that the skipped characters are summed up as they go. The process would look like this on the aforementioned non-numbers list:

Afterwards, iterate over both of the lists and skip {skipCount} characters from the non-numbers list, then take {takeCount} characters and store it in a result string. Note that the skipped characters are summed up as they go. The process would look like this on the aforementioned non-numbers list:

Example: "skipTest_String"

Take 0 characters è Taken: "", skip 4 characters è Skipped: "skip"è Result: ""
Take 4 charactersè Taken: "Test", skip 1 characters è Skipped: "_" è Result: "Test"
Take 7 charactersè Taken: "String", skip 0 characters è Skipped: "" è Result: "TestString"

After that, just print the result string on the console.

Input

The encrypted message as a string

Output

The decrypted message as a string

Constraints

The count of digits in the input string will always be even.
The encrypted message will contain any printable ASCII character.

Examples

Input	Output
T2exs15ti23ng1_3cT1h3e0_Roppe	TestingTheRope
O{1ne1T2021wf312o13Th111xreve!!@!	OneTwoThree!!!
this forbidden mess of an age rating 0127504740	hidden message

<?php $input = readline(); $number = []; $noNumber = []; $take = []; $skip = []; $result = ""; for ($i = 0; $i < strlen($input); $i++) { if (ctype_digit($input[$i])) { $number[] = $input[$i]; } else { $noNumber[] = $input[$i]; } } for ($i = 0; $i < count($number); $i++) { if ($i % 2 == 0) { $take[] = $number[$i]; } else { $skip[] = $number[$i]; } } $currentIndex = 0; for ($i = 0; $i < count($take); $i++) { $result .= implode("", array_slice($noNumber, $currentIndex, $take[$i])); $currentIndex += $take[$i] + $skip[$i]; } echo $result;