题目描述

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样例

blablabla

算法1

(暴力枚举) $O(n^2)$

blablabla

时间复杂度

参考文献

C++ 代码

blablabla

算法2

(暴力枚举) $O(n^2)$

blablabla

时间复杂度

参考文献

Java 代码

import java.util.*;

public class Main {
    public static int helper(int[] nums) {
        Arrays.sort(nums);
        int len = nums.length;
        int ans = 0;
        for (int i = 0; i < len / 2; i++) {
            ans += nums[len - 1 - i] - nums[i];
        }
        return ans;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            int n = scanner.nextInt();
            int[] nums = new int[n];
            for (int i = 0; i < n; i++) {
                nums[i] = scanner.nextInt();
            }
            System.out.println(helper(nums));
        }
    }
}