[Java知识库]【P1319 压缩技术】【Java】

package myPackage;
import java.util.Scanner;
public class Main {
	public static void main(String[]args) {
		Scanner in=new Scanner(System.in);
		int N=in.nextInt();
		char[]ch=new char[N*N];
		int flag=0,t=0;
		while(t<N*N) {
			int num=in.nextInt();
			for(int i=t;i<t+num;i++) {
				ch[i]=(char)(flag%2+'0');
			}
			t+=num;
			flag+=1;
		}
		for(int i=0;i<N*N;i++) {
			System.out.print(ch[i]);
			if(i%N==N-1) {
				System.out.println();
			}
		}
	}
}