**L_2326.java**

/**
 * Definition for singly-linked list.
 * public class ListNode {
 *     int val;
 *     ListNode next;
 *     ListNode() {}
 *     ListNode(int val) { this.val = val; }
 *     ListNode(int val, ListNode next) { this.val = val; this.next = next; }
 * }
 */
class Solution {
    public int[][] spiralMatrix(int m, int n, ListNode head) {
        int[][] res = new int[m][n];
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                res[i][j] = -1;
            }
        }
        int top = 0;
        int bottom = m-1;
        int left = 0;
        int right = n-1;
        ListNode temp = head;
        int j = 0;
        while(top <= bottom && left <= right && temp != null){
            for (int i = left; i <= right && temp != null; i++) {
                res[top][i] = temp.val;
                temp = temp.next;
            }
            top++;
            for (int i = top; i <= bottom && temp != null; i++) {
                res[i][right] = temp.val;
                temp = temp.next;
            }
            right--;
            for (int i = right; i >= left && temp != null; i--) {
                res[bottom][i] = temp.val;
                temp = temp.next;
            }
            bottom--;
            for (int i = bottom; i >= top && temp != null; i--) {
                res[i][left] = temp.val;
                temp = temp.next;
            }
            left++;
        }
        return res;
        
    }
}