Python clean solution


  • 0
    B
    class Solution(object):
        def mergeTrees(self, t1, t2):
    
            if not t1 or not t2:
                return t1 or t2
            
            t1.val = t1.val + t2.val
            
            t1.left = self.mergeTrees(t1.left,t2.left)
            t1.right = self.mergeTrees(t1.right,t2.right)
            
            return t1
    

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