Rust:

From the description:

Where every k_i > 1 and every k_i is maximized ...

The elements in the returned vector ($k_i$) must be strictly greater than 1.

However, your vector does contain 1 at the end.

Not a kata issue.

This is exactly the reason I enjoy codewars katas so much. Learn something knew every day.

Oh, yes... I see...

but the return value will be retuned as an integer. it won't convert to a char. that's not what you want the function to do

blue_pulled and red_pulled are always lower than the blue_start and red_start (as per problem definition).

the concept is called a vacuous truth. the tests are correct

>> 1.0 / 0.0
inf
>> 0.0 / 0.0
NaN

according to evcxr, which is a rust REPL

lol i have the same problem like u bro
like i don't even know why best_friend("jtekeh dek wbwclw gykc", "i", "h") should return True, even the string have no "i"

The issue is your *= for x[loop5] . just do x[loop5] * 2 so it doesn't attempt to assign it to immutable x.

Same principle if you have a scaler multiple and a vector. Used a lot in 3d models and graphics.

What happens if all the red and blue have been pulled? IE: A denom of 0?

What happens here if total is 0?

Yeah

Since the return value of the function is char, you can simply replace char(i) with i.