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g0001_0100.s0066_plus_one.readme.md Maven / Gradle / Ivy

66\. Plus One

Easy

You are given a **large integer** represented as an integer array `digits`, where each `digits[i]` is the `ith` digit of the integer. The digits are ordered from most significant to least significant in left-to-right order. The large integer does not contain any leading `0`'s.

Increment the large integer by one and return _the resulting array of digits_.

**Example 1:**

**Input:** digits = [1,2,3]

**Output:** [1,2,4]

**Explanation:** The array represents the integer 123. Incrementing by one gives 123 + 1 = 124. Thus, the result should be [1,2,4]. 

**Example 2:**

**Input:** digits = [4,3,2,1]

**Output:** [4,3,2,2]

**Explanation:** The array represents the integer 4321. Incrementing by one gives 4321 + 1 = 4322. Thus, the result should be [4,3,2,2]. 

**Example 3:**

**Input:** digits = [0]

**Output:** [1]

**Explanation:** The array represents the integer 0. Incrementing by one gives 0 + 1 = 1. Thus, the result should be [1]. 

**Example 4:**

**Input:** digits = [9]

**Output:** [1,0]

**Explanation:** The array represents the integer 9. Incrementing by one gives 9 + 1 = 10. Thus, the result should be [1,0]. 

**Constraints:**

*   `1 <= digits.length <= 100`
*   `0 <= digits[i] <= 9`
*   `digits` does not contain any leading `0`'s.