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Add Solution.java to problems 0872

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	`1`	`+/**`
	`2`	`+ * Definition for a binary tree node.`
	`3`	`+ * public class TreeNode {`
	`4`	`+ * int val;`
	`5`	`+ * TreeNode left;`
	`6`	`+ * TreeNode right;`
	`7`	`+ * TreeNode(int x) { val = x; }`
	`8`	`+ * }`
	`9`	`+ */`
	`10`	`+class Solution {`
	`11`	`+ public boolean leafSimilar(TreeNode root1, TreeNode root2) {`
	`12`	`+ List<Integer> rootA = new ArrayList<>();`
	`13`	`+ List<Integer> rootB = new ArrayList<>();`
	`14`	`+ dfs(root1, rootA);`
	`15`	`+ dfs(root2, rootB);`
	`16`	`+ return rootA.equals(rootB);`
	`17`	`+ }`
	`18`	`+`
	`19`	`+ private void dfs(TreeNode root, List<Integer> res) {`
	`20`	`+ if (root != null) {`
	`21`	`+ if (root.left == null && root.right == null) {`
	`22`	`+ res.add(root.val);`
	`23`	`+ }`
	`24`	`+ dfs(root.left, res);`
	`25`	`+ dfs(root.right, res);`
	`26`	`+ }`
	`27`	`+ }`
	`28`	`+}`

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