LeetCode 108. Convert Sorted Array to Binary Search Tree
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/** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */public class Solution { public TreeNode sortedArrayToBST(int[] nums) { int l = nums.length; if (l == 0) return null; int mid = l / 2; TreeNode root = new TreeNode(nums[mid]); int[] lNums = new int[mid]; int[] rNums = new int[l - mid - 1]; for (int i = 0; i < lNums.length; i++) lNums[i] = nums[i]; for (int i = mid + 1; i < l; i++) rNums[i - mid - 1] = nums[i]; root.left = sortedArrayToBST(lNums); root.right = sortedArrayToBST(rNums); return root; }} 0 0
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