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Category: Data Structures and Algorithms Technical Interview Questions

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Technical Interview Question on Data Structures and Algorithms: Perfect Shuffle

Technical Interview Question on Data Structures and Algorithms: Perfect Shuffle

What is an unbiased Shuffle algorithm? Consider an array with distinct elements A[1 … n] A perfectly unbiased shuffle algorithm would randomly shuffle all elements in the array such that after shuffling: 1.The probability that the shuffling operation would produce any particular permutation of the original array is the same for all permutations (i.e.) since…
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Technical Interview Question on Data Structure and Algorithms: Count the number of inversions in an array

Technical Interview Question on Data Structure and Algorithms: Count the number of inversions in an array

What is an inversion? Let A be an array of n distinct numbers. If i < j and A[i] > A[j], then the pair (i, j) is called an inversion of A. For example, the array {2,3,8,6,1} has 5 inversions: (2,1) (3,1) (8,6) (8,1) and (6,1) Trivial Solution to count the number of inversions in…
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