输入一个整数返回阵列
package com.base; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); while (sc.hasNext()) { int N = sc.nextInt(); for (int i = 0; i < N; i++) { int a = i * (i + 1) / 2; int b = (i + 1) * (i + 2) / 2; if (i % 2 == 0) { for (int j = a + 1; j <= b; j++) { if (j == b) { System.out.println(j); break; } System.out.print(j+"*"); } } else { for(int j = b; j >= a + 1; j--){ if(j == a + 1){ System.out.println(j); break; } System.out.print(j+"*"); } } } } } }结果：
10 1 3*2 4*5*6 10*9*8*7 11*12*13*14*15 21*20*19*18*17*16 22*23*24*25*26*27*28 36*35*34*33*32*31*30*29 37*38*39*40*41*42*43*44*45 55*54*53*52*51*50*49*48*47*46