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Finding nth digit of natural numbers sequence in JavaScript
Natural Number Sequence:
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12...
This sequence extended infinitely is known as natural number sequence.
We are required to write a JavaScript function that takes in a number, num, as the first and the only argument. The function should find and return the (num)th digit that will appear in this sequence when written, removing the commas and whitespaces.
For example −
If the input number is −
const num = 13;
Then the output should be −
const output = 1;
because '1234567891011' this string has its 13th number as 1
Example
The code for this will be −
const num = 13;
const findDigit = (num = 1) => {
let str = '';
let i = 1;
while(str.length < num){
str += i;
i++;
};
const required = str[num - 1];
return required;
};
console.log(findDigit(num));Output
And the output in the console will be −
1
Updated on 03-Mar-2021 08:10:01
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