代码之美:实现数绕圈打印

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int main(int argc, const char * argv[])
{
//     Person *per = [[Person alloc]init];
    @autoreleasepool {
       
        int SIZE = 7;
        int array[SIZE][SIZE];
        int orient = 0;//代表绕圈方向,其中0代表向下,1代表向右,2代表向左,3代表向上
        for (int i = 1, j = 0 ,k = 0; i <= SIZE *SIZE; i++) {
            array[j][k] = i;//j,k分别为行和列索引
            if ((j+k==SIZE -1)) {
                if (j>k) {
                    orient = 1;
                }
                else{
                    
                    orient = 2;
                }
            }else if (k==j&&k>=SIZE/2){
                
                orient =3;
            }
            else if ((j==k-1)&&k<=SIZE/2){
                
                orient = 0;
            }
            switch (orient) {
                case 0:
                    j++;
                    break;
                case 1:
                    k++;
                    break;
                case 2:
                    k--;
                    break;
                case 3:
                    j--;
                    break;
             
            }
        }
        
        for (int i = 0; i<SIZE; i++) {
            for (int j=0; j<SIZE; j++) {
                if (array[i][j] <10) {
                    printf("0%d ",array[i][j]);
                }
                else{
                    
                    printf("%d ",array[i][j]);
                    
                }
                
            }
            printf("\n");
        }
        
        
    }

    return 0;
}