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Find the Duplicate Number

Explore how to detect a duplicate number in an array using the fast and slow pointers technique. Learn to solve this problem efficiently without altering the array or using extra space, and practice implementing your solution with step-by-step guidance.

Statement

Given an array of positive numbers, nums, such that the values lie in the range [1,n][1, n], inclusive, and that there are n+1n+1 ...