Find the Distance Value Between Two Arrays
Lessons Learned: TreeSet, Array Manipulation
Question: Given two integer arrays
arr2, and the integer
d, return the distance value between the two arrays.
The distance value is defined as the number of elements
arr1[i] such that there is not any element
|arr1[i]-arr2[j]| <= d.
While this question may seem daunting at first, we can simply utilize a TreeSet to add values from the second array into. Then we can get a lower and upper bound (minus d, plus d) of each number in
arr1, and then see if there are any values in
arr2 that are within this lower and upper bound.