Question

java 题这个怎么做，试题7的任务一，帮帮忙各位大神

Answer 1

试题7任务一

public class NumDemo {
	public static void main(String[] args) {
		int[] ary = new int[38];
		for (int i = 0; i < ary.length; i++) {
			ary[i]=i+1;
		}
		String qian="";
		String hou="";
		String yuandi="";
		for (int i = 0; i < ary.length; i++) {
			if(ary[i]%3==1){
				qian+=ary[i]+",";
			}else if(ary[i]%3==2){
				hou+=ary[i]+",";
			}else{
				yuandi+=ary[i]+",";
			}
		}
		System.out.println("向前一步的同学:"+qian);
		System.out.println("向后一步的同学:"+hou);
		System.out.println("原地不同的同学:"+yuandi);

	}
}

输出

向前一步的同学:1,4,7,10,13,16,19,22,25,28,31,34,37,
向后一步的同学:2,5,8,11,14,17,20,23,26,29,32,35,38,
原地不同的同学:3,6,9,12,15,18,21,24,27,30,33,36,