Array difference

Write a function that returns a sorted vector with the difference of the sorted vectors @v1@ and @v2@. The result must have the elements in @v1@ that are not in @v2@, without repetitions. For instance, the result of the difference of a vector with 1, 2, 2, 5, 5 and 7 and a vector with 2, 3, 3 and 7 is a vector with 1 and 5.

Interface

C++	`vector<double> difference(const vector<double>& v1, const vector<double>& v2);`
Java	`public static double[] difference(double[] v1, double[] v2);`
Python	`difference(v1, v2) # returns list`
	`difference(v1: list[float], v2: list[float]) -> list[float]`

Observation

You only need to submit the required procedure; your main program will be ignored.

Problem information

Author: Unknown
Translator: Carlos Molina

Generation: 2026-01-25T11:22:15.801Z