can anyone please explain how it work??

The absolute value of positive numbers and zero is that number itself, and the C++ compilers automaticly convert -0 to 0.

Same solution as mine, except you don't need to split the string since you can just iterate over a string using a for or a for of loop.

-0 is not exist, the program understand -0 or +0 as 0;

Really nice!

Накой строку преобразовывать в массив если ее и так можно перебрать?

because count is an object. the ternary operation is checkin if the property (key: value) is in the count object already. if yes, it adds 1 to the stored value, if not it sets/adds the property.

so if string = 'example', the first run is going to see that count is empty, so count['e'] doesn't exist, and it will set count[e] = 1. then you have count = {e: 1}.

Can someone explain to me how the characters are ending up in the 'count' variable in this solution? I understand that it works, I'm not quite getting how.

Awesome !!

Mind blown !! Excellent !

thats so docking clever

clever, I had same solution but did n * -1 instead of just -n. Good idea

i think he doesnt talk about his comments, he means that his solution isnt the shortest and could be better

nice!!

for..of loop, you mean - a for..in loop on a string will iterate over the indeces; a for..of loop will iterate over the characters.