Tell us what’s happening:
Hi, I understood the solution but I don’t quite get how it satisfies some of the challenge instructions:
List itemnextInLine(, 5)should return a number. // Is this instruction trying to state something different from the next one?
List itemnextInLine(, 1)should return 1. // Is it because after pushing 1, it becomes the first element in arr (since it is empty in this example (is it?))?
List itemAfter nextInLine(testArr, 10), testArrshould be 10. // No idea.
Can somebody explain, please? Thank you!
Your browser information:
User Agent is:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.79 Safari/537.36.
Link to the challenge:
push puts the item at the end of the array.
shift takes the first item off the array.
So if you push 10 into
, the array will look like
[4,10]. If you run shift on that, it will pull 4 off the front.
List itemnextInLine(, 5) this means the line is empty, so the number five will enter the line and be served next. Thereofre, the function returns
List itemnextInLine(, 1) same as before. An empty line, whoever get in line next (
1) will be removed next.
List itemAfter nextInLine(testArr, 10) I don’t know what this array
testArr holds. It probably has a lot of elements and the test is just checking if you are not removing something you’re not supposed to. Maybe it
testArr = [0, 1, 2, 3, 4, 5, so after the function runs,
testArr should turn to
[1, 2, 3, 4, 10] and the providede argument was successfully added to the end of the line.
Got it now. Thank you so much!
Thank you very much for your help!