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Challenge: Index Array

Explore how to rearrange an integer array so that each value i is stored at index i in Go. Understand constraints and how to manage missing values represented by -1 for effective array indexing.

Problem

You are given an array of size n, containing elements from indexes 0 to n-1. All values from 0 to n-1 are present in the array, and if a value is not in the array, then ...