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Data Structures for Coding Interviews in Java

Solution: Product of Array Except Self

Explore a step-by-step solution to the product of array except self problem using arrays in Java. Understand both the brute force and optimized bidirectional product accumulation approaches. Learn to implement an O(n) time algorithm without division, improving efficiency and space usage.

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Statement

You’re given an integer array, nums. Return a resultant array product so that product[i] is equal to the product of all the elements of nums except nums[i].

Write an algorithm that runs in O(n)O(n) time without using the division operation.

Constraints:

  • 2≤2 \leq nums.length ≤103\leq 10^3
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