Arrays & Hashing pattern
Majority Element
Given an array of size n, return the element that appears more than ⌊n/2⌋ times. You may assume such an element always exists. Watch it run step by step, then write your own pseudocode and get it checked by AI.
- LeetCode 169
- Easy
- 2 approaches
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Arrays & HashingLeetCode 169
Easy
From the first idea to the best one
- 01 Brute force · hash map O(n)O(n) space
- 02 Optimized · Boyer-Moore O(n)O(1) space
What you will learn
- How to read Majority Element and spot the arrays & hashing pattern in it
- Brute force · hash map: O(n) time, O(n) space
- Optimized · Boyer-Moore: 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 Majority Element 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.