题解 | #蛇形矩阵#

import java.util.Scanner;

public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); while(sc.hasNext()) { int a = sc.nextInt(); int lastElementInRowEnd = 0;

        for(int i = 0; i <= a; i++) {
            lastElementInRowEnd += i;
        }
        
        int firstElementInRowHead = 1;
        int firstElementAddInRowHead = 1;
        for(int row = 0; row < a; row++) {
            it(firstElementInRowHead, lastElementInRowEnd, firstElementAddInRowHead);
            lastElementInRowEnd--;
            firstElementInRowHead += (1 + row);
            firstElementAddInRowHead++;
        }
    }
}
//Used to print every row element
private static void it(int a, int b, int c) {
    for(int i = a; i <= b; i += c ) {
        System.out.print(i + " ");
        c++;
    }
    System.out.println();
}

}

//Above all, We can tell all information from variables name, so I don't need to talk any more