题解 | 尼科彻斯定理
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 sc = new Scanner(System.in); int n = sc.nextInt(); int num = (n-1)*n+1;; StringBuilder builder = new StringBuilder(); for (int i = 1; i <= n; i++) { builder.append(num).append("+"); num +=2 ; } System.out.println(builder.substring(0, builder.length() - 1)); } }
完了第一反应就是这个,面向测试用例编程