题解 | 计算阶乘

import java.io.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
private static final int MOD = 1000000007;
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));

        int T = Integer.parseInt(br.readLine().trim());

        while (T-- > 0) {
            int n = Integer.parseInt(br.readLine().trim());

            long ans = 1;

            for(int i=1;i<=n;i++){
                ans = (ans*i)%MOD;
            }
            out.println(ans%MOD);
        }

        out.flush();
        out.close();
        br.close();
    }
}