/**

* @link https://leetcode.com/problems/plus-one/

* @description Increment the large integer by one and return the resulting array of digits.

* @param {Object []} digits

* @returns {Object}

*/

export default (digits) => {

const numDigits = digits.length;

const ans = new Array(numDigits).fill(0);

let currIndex = numDigits - 1;

while (currIndex >= 0) {

const currentDigit = digits[currIndex];

// Case 1: Current digit is less than 9

if (currentDigit < 9) {

ans[currIndex] = currentDigit + 1; //

break;

} else {

// Case 2: Current digit == 9

ans[currIndex] = 0;

currIndex -= 1;

}

}

// Case 3: All digits are 9s

if (currIndex < 0) {

return [1, ...ans];

}

while (currIndex > 0) {

currIndex -= 1;

ans[currIndex] = digits[currIndex];

}

return ans;

};