I am trying to write a method in Ruby that takes an array of size N and finds duplicates in the array and lists the duplicate. I'm having trouble creating an array with a range of 0..N-2. It tells me N is an uninitialized constant.
It returns an array of hashes with keys you can see above. How to find duplicate records in ActiveRecord other than original one. 1. Ruby: detect duplication in a hash based on the combination of two key's values.
Java Program to find duplicate elements in an array. There are two straight * forward solution of this problem first, brute force way and second by. I looked into the api of ruby I found uniq method which outputs the array with no duplication.
One of the most common way to find duplicates is by using brute force method, which compares each element of the array to every other element. This solution has the time complexity of O(n^2) and only exists for the academic purpose.