Leaderboard
Showing:
Handle Score
@Ibrahim Nash 6420
@blackshadows 6380
@mb1973 5704
@Quandray 5245
@akhayrutdinov 5111
@saiujwal13083 5046
@sanjay05 3762
@kirtidee18 3673
@mantu_singh 3530
@marius_valentin_dragoi 3523
@sushant_a 3459
Complete Leaderboard
Adding One
Easy Accuracy: 38.21% Submissions: 1030 Points: 2

Given a non-negative integer(without leading zeroes) represented as an array A of N digits. Your task is to add 1 to the number (increment the number by 1). The digits are stored such that the most significant digit is at the starting index of the array.

Example 1:

Input:
N = 4
A[] = {5, 6, 7, 8}
Output: 5 6 7 9
Explanation: 5678 + 1 = 5679

Example 2:

Input:
N = 3
A[] = {9, 9, 9}
Output: 1 0 0 0
Explanation: 999 + 1 = 1000

Your Task:
You don't need to read input or print anything. Your task is to complete the function addOne() which takes the array of integers a and as parameters and returns an list of integers denoting the answer.

 

Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N) for the list of integers used to store the returning result. 

Constraints:
1 ≤ N ≤ 105
0 ≤ A[i] ≤ 9
There are no leading zeros in the input number. 

to report an issue on this page.

Editorial

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

Yes

All Submissions

My Submissions:

Login to access your submissions.

Adding One

Output Window