refactor 624

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_624.java

@@ -7,16 +7,16 @@
 public class _624 {
 
     public static class Solution1 {
-        public int maxDistance(int[][] arrays) {
+        public int maxDistance(List<List<Integer>> arrays) {
             List<Integer> max = new ArrayList<>();
-            for (int[] array : arrays) {
-                max.add(array[array.length - 1]);
+            for (List<Integer> array : arrays) {
+                max.add(array.get(array.size() - 1));
             }
             Collections.sort(max);
             int ans = Integer.MIN_VALUE;
-            for (int[] array : arrays) {
-                int big = array[array.length - 1] == max.get(max.size() - 1) ? max.get(max.size() - 2) : max.get(max.size() - 1);
-                ans = Math.max(ans, big - array[0]);
+            for (List<Integer> array : arrays) {
+                int big = array.get(array.size() - 1) == max.get(max.size() - 1) ? max.get(max.size() - 2) : max.get(max.size() - 1);
+                ans = Math.max(ans, big - array.get(0));
             }
             return ans;
         }