# (LeetCode OJ) Plus One [66]

Source: Internet
Author: User

(LeetCode OJ) Plus One [66]

66. Plus One

My Submissions QuestionTotal Accepted: 77253 Total Submissions: 242942 Difficulty: Easy

Given a non-negative number represented as an array of digits, plus one to the number.

The digits are stored such that the most significant digit is at the head of the list.

Subscribe to see which companies asked this question

Hide Tags Array Math Show Similar Problems
```// First clear the train of thought: the question is that an array is used to represent a non-negative integer, and each bit of the number is stored in the array. // it is clear that the end of the array is the second bit of the number, the start is the highest bit // if the low position is less than 9, it is obvious that it can be directly + 1 // if it is = 9, then the position is zero and the last two digits + 1, similarly, if the value is smaller than 9, it is directly + 1 if it is smaller than 9. Otherwise, it is carried to the front of the array. // an extreme case: for example, 999, after the carry is 1000, the class Solution {public: vector is extended.

PlusOne (vector

& Digits) {vector

Ans = digits; int I = 0; for (I = ans. size ()-1; I> = 0; I --) // The traversal starts from the low position, and the reverse traversal {if (I = 0 & ans [0] = 9) {// processing extreme cases ans [I] = 0; vector

: Iterator ansiter = ans. begin (); ans. insert (ansiter, 1); break;} if (ans [I]! = 9) {ans [I] + = 1; break;} else {ans [I] = 0 ;}} return ans ;}};

```

Dirty performance ...............................

Related Keywords:

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

## A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

• #### Sales Support

1 on 1 presale consultation

• #### After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

• Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.