.

The negative part is ignored and the number '4' has been declared. Since it says to count from right to left, we had to add a zero on the left side to accommodate for the nth value. So -456 become 0456. Therefore, 0 is the correct answer for the 4th position.

Change to:

fn find_digit(num: i32, nth: i32) -> i32 {
   // 
}

In Rust nth is declared as usize but negative numbers are passed.

Why findDigit(-456, 4) value is return 0?

Can any one tell me,
This algoritham is write if I don't any predefine function of javascript?

1. Change digital_root(sumAll) to return digital_root(sumAll)
2. Change console.log(sumAll) to return sumAll
3. Change .charAt(i) to [i]
4. Change for loop so that it loops through each character in the string - e.g. for (var i = 0; i < strNumber.length; i++)