Concise Java 2-Liner


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    E
    public class Solution {
        public boolean isSameTree(TreeNode p, TreeNode q) {
            if (p == null || q == null) return p == null && q == null;
            // p, q not null
            return p.val == q.val && isSameTree(p.left, q.left) && isSameTree(p.right, q.right);
        }
    }
    

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