66.plus-one.ts

/*
 * @lc app=leetcode id=66 lang=typescript
 *
 * [66] Plus One
 */

// @lc code=start
function plusOne(digits: number[]): number[] {
	for (let i = digits.length - 1; i >= 0; i--) {
		if (digits[i] === 9) {
			digits[i] = 0;
		} else {
			digits[i]++;
			return digits;
		}
	}
	digits.unshift(1);
	return digits;
}
// @lc code=end