Suppose we have a string called animals and another string called dinosaurs. Every letter in animals represents a different type of animal and every unique character in dinosaurs string represents a different dinosaur. We have to find the total number of dinosaurs in animals.
So, if the input is like animals = "xyxzxyZ" dinosaurs = "yZ", then the output will be 3, as there are two types of dinosaurs y and Z, in the animal string there are two y type animal and one Z type animal.
To solve this, we will follow these steps −
Let us see the following implementation to get better understanding −
class Solution: def solve(self, animals, dinosaurs): res = 0 dinosaurs = set(dinosaurs) for c in dinosaurs: res += animals.count(c) return res ob = Solution() animals = "xyxzxyZ" dinosaurs = "yZ" print(ob.solve(animals, dinosaurs))