Stand in Line- doesn't give the expected output

JavaScript
1

Tell us what’s happening:

i don’t understand the logic behind this i have looked at it for too long already

Your code so far


function nextInLine(arr, item) {
  // Your code here
  arr = []; 
  arr.push(item);
  var removed = arr.shift()
  return removed;  // Change this line
}

// Test Setup
var testArr = [5,6,7,8,9];

// Display Code
console.log("Before: " + JSON.stringify(testArr));
console.log(nextInLine(testArr, 10)); // Modify this line to test
console.log(nextInLine([],5));
console.log(nextInLine([],1));
console.log(nextInLine([2],1));
console.log(nextInLine(testArr,5));
console.log(nextInLine(testArr[4]));
console.log("After: " + JSON.stringify(testArr));

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/stand-in-line/

2

You’re setting arr to empty in the first line, so you’re immediately wiping out whatever arr was when it was passed into the function

1 Like