Leetcode 287 - Find the Duplicate Number JavaScript

LeetCode problem 287 is known as "Find the Duplicate Number." It's a coding problem that falls under the category of array searching algorithms. Although it's easy to solve this problem with O(n^2) time complexity, it's quite the challenge to solve it any faster. In this video I WILL show you how to solve it faster using Floyd's Cycle detection.

Chapters:
0:00 Intro
2:22 Coding Leetcode 287
12:57 Outro

[francksgenlecroyant]

Hey Chuck, just subscribed, do more of these leetcodes please, it's helping a lot.

[theunknown]

Another solution since the range is given.

1. Calculate sum from 1 to n, call this total_sum
2. Calculate xor sum of array (xor of same num is 0), xor_sum
3. Dup_Num = Total_sum-xor_sum