题解 | 左侧严格小于计数

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int[] a = new int[n + 1];
        for (int i = 1; i <= n; i++) {
            a[i] = in.nextInt();
        }
        System.out.print(0 + " ");
        int res = 0;
        for (int i = 2; i <= n; i++) {
            for (int j = 1; j < i; j++) {
                if (a[j] < a[i])res++;
            }
            System.out.print(res + " ");
            res = 0;
        }
    }
}