Arrays & Hashing pattern
Plus One
A non-negative integer is given as an array of digits, most significant first. Add one to it and return the resulting array of digits. Watch it run step by step, then write your own pseudocode and get it checked by AI.
- LeetCode 66
- Easy
- 2 approaches
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Arrays & HashingLeetCode 66
Easy
From the first idea to the best one
- 01 Brute force · convert to a number O(n)O(n) space
- 02 Optimized · carry in place O(n)O(1) space
What you will learn
- How to read Plus One and spot the arrays & hashing pattern in it
- Brute force · convert to a number: O(n) time, O(n) space
- Optimized · carry in place: O(n) time, O(1) space
- The pseudocode for each approach, its line lit as the animation runs
- Practice: write your own pseudocode and get it checked
More Arrays & Hashing
See Plus One run, step by step
Sign in and this page opens on the animation, with all 13 Arrays & Hashing problems beside it.
DSA comes with the all labs plan and every ChaiCode batch.