100 Same Tree
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//队列遍历树,从中找到比较值
/**
* Definition for a binary tree node.
* public class TreeNode {
* int val;
* TreeNode left;
* TreeNode right;
* TreeNode(int x) { val = x; }
* }
*/
public class Solution {
public boolean isSameTree(TreeNode p, TreeNode q) {
if(p!=null&&q!=null){
Queue<TreeNode> queue1 = new LinkedList<TreeNode>();
Queue<TreeNode> queue2 = new LinkedList<TreeNode>();
queue1.add(p);
queue2.add(q);
while(!queue1.isEmpty()){
TreeNode node1,node2;
node1 = queue1.remove();
node2 = queue2.remove();
if(node1.val != node2.val){
return false;
}
if(node1.left!=null){
if(node2.left == null) return false;
queue1.add(node1.left);
queue2.add(node2.left);
}
else if(node2.left !=null){ return false;}
if(node1.right!=null){
if(node2.right == null) return false;
queue1.add(node1.right);
queue2.add(node2.right);
}
else if(node2.right !=null){ return false;}
}
return true;
}
else if(p==null&&q==null){return true;}
else return false;
}
}
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