首页 > 代码库 > Problem Path Sum
Problem Path Sum
Problem Description: Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.
Solution: 递归
1 public boolean hasPathSum(TreeNode root, int sum) { 2 if (root == null) return false; 3 if (root.left == null && root.right == null) return root.val == sum; 4 else { 5 if (root.left != null) { 6 return hasPathSum(root.left, sum - root.val) ? true : hasPathSum(root.right, sum - root.val); 7 } else { 8 return hasPathSum(root.right, sum - root.val); 9 }10 11 }12 }
声明:以上内容来自用户投稿及互联网公开渠道收集整理发布,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任,若内容有误或涉及侵权可进行投诉: 投诉/举报 工作人员会在5个工作日内联系你,一经查实,本站将立刻删除涉嫌侵权内容。