#pragma once
#include <iostream>
#include <map>

namespace yaha {
class Array {
public:
    void merge(std::vector<int>& nums1, int m, std::vector<int>& nums2, int n);
    int remove_element(std::vector<int>& nums, int val);
    int remove_duplicates(std::vector<int>& nums);
    int remove_duplicates2(std::vector<int>& nums);

    int majority_element(std::vector<int>& nums);

    void rotate(std::vector<int>& nums, int k);

    int max_profit(std::vector<int>& prices);
};
}