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Grokking the Coding Interview Patterns in C++

Solution: Find the Distance Value Between Two Arrays

Explore how to solve the problem of finding the distance value between two integer arrays by applying the sort and search pattern. Learn to sort one array and efficiently use binary search to check element distances within a given threshold, improving performance over brute force methods and understanding time complexity tradeoffs.

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Statement

You are given two integer arrays, arr1 and arr2, along with an integer d. Your task is to find and return the distance value between these arrays.

Note: The distance value is defined as the count of elements in arr1 for which there is no element in arr2 such that ∣arr1[i]−arr2[j]∣<=|arr1[i]-arr2[j]| <= d.

Constraints:

  • 1<=1 <= arr1.length, arr2.length <=500 <= 500

  • ...