Bit Manipulation pattern
Missing Number
An array contains n distinct numbers drawn from the range [0, n]. Exactly one number in that range is missing, find it using O(1) extra space. Watch it run step by step, then write your own pseudocode and get it checked by AI.
- LeetCode 268
- Easy
- 2 approaches
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Bit ManipulationLeetCode 268
Easy
From the first idea to the best one
- 01 Sum formula O(n)O(1) space
- 02 Optimized · XOR O(n)O(1) space
What you will learn
- How to read Missing Number and spot the bit manipulation pattern in it
- Sum formula: O(n) time, O(1) space
- Optimized · XOR: 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 Bit Manipulation
See Missing Number run, step by step
Sign in and this page opens on the animation, with all 5 Bit Manipulation problems beside it.
DSA comes with the all labs plan and every ChaiCode batch.