* fix: broken Read-search-ask link now point to correct url * fix: changed link to original forum link with more views * fix: changed http links to correct version * fix: link in help modal
3.3 KiB
3.3 KiB
id, title, isRequired, challengeType, forumTopicId, localeTitle
id | title | isRequired | challengeType | forumTopicId | localeTitle |
---|---|---|---|---|---|
a0b5010f579e69b815e7c5d6 | Search and Replace | true | 5 | 16045 | Поиск и замена |
Description
Сохраните случай первого символа в исходном слове, когда вы его замените. Например, если вы хотите заменить слово «Книга» словом «собака», его следует заменить как «Собака». Не забудьте использовать Read-Search-Ask, если вы застряли. Попробуйте подключить программу. Напишите свой собственный код.
Instructions
Tests
tests:
- text: <code>myReplace("Let us go to the store", "store", "mall")</code> should return "Let us go to the mall".
testString: assert.deepEqual(myReplace("Let us go to the store", "store", "mall"), "Let us go to the mall");
- text: <code>myReplace("He is Sleeping on the couch", "Sleeping", "sitting")</code> should return "He is Sitting on the couch".
testString: assert.deepEqual(myReplace("He is Sleeping on the couch", "Sleeping", "sitting"), "He is Sitting on the couch");
- text: <code>myReplace("This has a spellngi error", "spellngi", "spelling")</code> should return "This has a spelling error".
testString: assert.deepEqual(myReplace("This has a spellngi error", "spellngi", "spelling"), "This has a spelling error");
- text: <code>myReplace("His name is Tom", "Tom", "john")</code> should return "His name is John".
testString: assert.deepEqual(myReplace("His name is Tom", "Tom", "john"), "His name is John");
- text: <code>myReplace("Let us get back to more Coding", "Coding", "algorithms")</code> should return "Let us get back to more Algorithms".
testString: assert.deepEqual(myReplace("Let us get back to more Coding", "Coding", "algorithms"), "Let us get back to more Algorithms");
Challenge Seed
function myReplace(str, before, after) {
return str;
}
myReplace("A quick brown fox jumped over the lazy dog", "jumped", "leaped");
Solution
function myReplace(str, before, after) {
if (before.charAt(0) === before.charAt(0).toUpperCase()) {
after = after.charAt(0).toUpperCase() + after.substring(1);
} else {
after = after.charAt(0).toLowerCase() + after.substring(1);
}
return str.replace(before, after);
}