can someone explain me this

Question

function array_element_mode(arr) {
var ctr = [],
ans = 0;

for(var i = 0; i < 10; i++) {
ctr.push(0);
}
for(var i = 0; i < arr.length; i++) {
ctr[arr[i] - 1]++;
if(ctr[arr[i] - 1] > ctr[ans]) {
ans = arr[i] - 1;
}
}
return ans + 1;
}
console.log(array_element_mode([1, 2, 3, 2, 2, 8, 1, 9]))

Answer 1

The function returns the most repeating number in arr. In my opinion the code is bad and shouldn't be taken as example when learning. Do you have a doubt with a particular line/block of the code or you want to hear the full explanation.

Answer 2

Thanks for your understanding.
In this article you can see the same algorithm used to find the most common string:
https://medium.com/@AmJustSam/how-to-find-most-frequent-item-of-an-array-12015df68c65
There's a section called: "If code above is complicated for some of you then let me explain it.". Try to find it for a better explanation.

Answer 3

Thanks Kevin ★
Btw can you share any sources where I can get codes like this in a more simpler way

Answer 4

Thank you @kevin :)