Jun 17, 2023 · May 31, 2023 · May 31, 2023 · Jun 1, 2023 · Jun 16, 2023 · Jun 17, 2023
diff --git a/problems/0257.二叉树的所有路径.md b/problems/0257.二叉树的所有路径.md
Original file line number	Diff line number	Diff line change
Expand Up		@@ -390,6 +390,8 @@ public:

		```Java
		//解法一

	//方式一
		class Solution {
		/**
		* 递归法
Expand Down Expand Up		@@ -428,9 +430,32 @@ class Solution {
		}
		}
		}

	//方式二
	class Solution {

	List<String> result = new ArrayList<>();

	public List<String> binaryTreePaths(TreeNode root) {
	deal(root, "");
	return result;
	}

	public void deal(TreeNode node, String s) {
	if (node == null)
	return;
	if (node.left == null && node.right == null) {
	result.add(new StringBuilder(s).append(node.val).toString());
	return;
	}
	String tmp = new StringBuilder(s).append(node.val).append("->").toString();
	deal(node.left, tmp);
	deal(node.right, tmp);
	}
	}
		```
		```java
	// 解法2
	// 解法二
		class Solution {
		/**
		* 迭代法
Expand Down