c2558b3816
* fix(Curriculum): ensure code that includes and is not equal to the flat or flatMap methods do not fail the test suite * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/steamroller.english.md Co-Authored-By: Tom <20648924+moT01@users.noreply.github.com> * Update steamroller.english.md Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
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1.7 KiB
id, title, isRequired, challengeType, forumTopicId
| id | title | isRequired | challengeType | forumTopicId |
|---|---|---|---|---|
| ab306dbdcc907c7ddfc30830 | Steamroller | true | 5 | 16079 |
Description
Instructions
Tests
tests:
- text: <code>steamrollArray([[["a"]], [["b"]]])</code> should return <code>["a", "b"]</code>.
testString: assert.deepEqual(steamrollArray([[["a"]], [["b"]]]), ["a", "b"]);
- text: <code>steamrollArray([1, [2], [3, [[4]]]])</code> should return <code>[1, 2, 3, 4]</code>.
testString: assert.deepEqual(steamrollArray([1, [2], [3, [[4]]]]), [1, 2, 3, 4]);
- text: <code>steamrollArray([1, [], [3, [[4]]]])</code> should return <code>[1, 3, 4]</code>.
testString: assert.deepEqual(steamrollArray([1, [], [3, [[4]]]]), [1, 3, 4]);
- text: <code>steamrollArray([1, {}, [3, [[4]]]])</code> should return <code>[1, {}, 3, 4]</code>.
testString: assert.deepEqual(steamrollArray([1, {}, [3, [[4]]]]), [1, {}, 3, 4]);
- text: Your solution should not use the <code>Array.prototype.flat()</code> or <code>Array.prototype.flatMap()</code> methods.
testString: assert(!code.match(/\.\s*flat\s*\(/) && !code.match(/\.\s*flatMap\s*\(/));
Challenge Seed
function steamrollArray(arr) {
return arr;
}
steamrollArray([1, [2], [3, [[4]]]]);
Solution
function steamrollArray(arr) {
if (!Array.isArray(arr)) {
return [arr];
}
var out = [];
arr.forEach(function(e) {
steamrollArray(e).forEach(function(v) {
out.push(v);
});
});
return out;
}