尼科彻斯定理

import java.util.Scanner;

public class NicoChester {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int num = scan.nextInt();
		checkNicoChester(num);
	}

	private static void checkNicoChester(int num) {
		int []result = new int[num];
		int len = result.length-1;
		if(num%2 != 0){
			for (int i = 0; i < len; i++) {
				result[i] = num*num-2*(result.length/2-i);
				System.out.print(result[i]+"+");
			}
			System.out.print(num*num-2*(result.length/2-len));
		}
		else{
			for (int i = 0; i < len; i++) {
				result[i] = num*num-num+1+2*i;
				System.out.print(result[i]+"+");
			}
			System.out.print(num*num-num+1+2*len);
		}
	}

}

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