Is Binary Tree Symmetric

Problem Statement:
       Check if the Given Binary Tree is Symmetric about the plane passing through root.

Fig: Symmetric Binary Tree about the place passing through root

Solution:
Full Source Code :  LINK
Below is the recursive implementation to check if Binary Tree is Symmetric

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/** * Sub-routine to check if Binary Tree is Symmetric */ public boolean isSymmetric(Node left, Node right){ if ( (left==null && right!=null) || (left!=null && right==null) ) return false; if(left==null && right==null) return true; return isSymmetric(left.left,right.right) && isSymmetric(left.right,right.left); }

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Happy Coding!! :)