題號:59 標題：Spiral Matrix II 難度：Medium

Given a positive integer n, generate an n x n matrix filled with elements from 1 to n2 in spiral order.

Example 1:

Input: n = 3
Output: [[1,2,3],[8,9,4],[7,6,5]]

Example 2:
Input: n = 1
Output: [[1]]

Constraints:
• 1 <= n <= 20

我的程式碼

class Solution {
    public int[][] generateMatrix(int n) {
        int[][] result = new int[n][n];
        int i=0,j=0,k=1,ax=0,ay=0,bx=0,by=n-1,cx=n-1,cy=n-1,dx=n-1,dy=0;
        
        while(k!=(n*n+1)){
            
            for(i=ay;i<=by;i++){
                System.out.print(" 1:" + k);
                result[ax][i] = k;
                k++;
            }
            ax++;
            bx++;
            for(i=bx;i<=cx;i++){
                System.out.print(" 2:" + k);
                result[i][by] = k;
                k++;
            }
            by--;
            cy--;
            for(i=cy;i>=dy;i--){
                System.out.print(" 3:" + k);
                result[cx][i] = k;
                k++;
            }
            cx--;
            dx--;
            for(i=dx;i>=ax;i--){
                System.out.print(" 4:" + k);
                result[i][dy] = k;
                k++;
            }
            dy++;
            ay++;
        }
        
        for(i=0;i<n;i++){
            for(j=0;j<n;j++){
                //System.out.print(result[i][j]);
            }
        }
        
        return result;
    }
}

day29心得
陣列越寫越順了呢，開心，明天就要結束拉，開心