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Grokking the Coding Interview Patterns in Go

Find the Duplicate Number

Explore how to find the duplicate number in an array where values range from 1 to n and the array length is n plus one. Learn to apply fast and slow pointer techniques to detect cycles and duplicates without altering the array or using extra space.

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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 ...