add

tyreke.xu · tyreke.xu · commit 22eeedb36988 · 2020-04-16T09:47:33.000+08:00
diff --git a/src/com/blankj/easy/_108/Solution.java b/src/com/blankj/easy/_108/Solution.java
@@ -12,13 +12,17 @@
  * </pre>
  */
 public class Solution {
-    public TreeNode sortedArrayToBST(int[] nums) {
-        if (nums == null || nums.length == 0) return null;
+    private TreeNode sortedArrayToBST(int[] nums) {
+        if (nums == null || nums.length == 0) {
+            return null;
+        }
         return helper(nums, 0, nums.length - 1);
     }
 
     private TreeNode helper(int[] nums, int left, int right) {
-        if (left > right) return null;
+        if (left > right) {
+            return null;
+        }
         int mid = (left + right) >>> 1;
         TreeNode node = new TreeNode(nums[mid]);
         node.left = helper(nums, left, mid - 1);
