LeetCode - Same Tree Solution - The Coding Shala

Home >> LeetCode >> Same Tree

 In this post, we will learn how to solve LeetCode's Same Tree problem and will implement its solution in Java.

Same Tree Problem

Given the roots of two binary trees p and q, write a function to check if they are the same or not. 

Two binary trees are considered the same if they are structurally identical, and the nodes have the same value.

Practice this problem on LeetCode.

LeetCode - Same Tree Java Solution

Approach 1

Using recursion.

Java Program: 

/**
 * Definition for a binary tree node.
 * public class TreeNode {
 *     int val;
 *     TreeNode left;
 *     TreeNode right;
 *     TreeNode() {}
 *     TreeNode(int val) { this.val = val; }
 *     TreeNode(int val, TreeNode left, TreeNode right) {
 *         this.val = val;
 *         this.left = left;
 *         this.right = right;
 *     }
 * }
 */
class Solution {
    public boolean isSameTree(TreeNode p, TreeNode q) {
        // using recursion
        
        if (p == null && q == null) return true;
        
        if (p == null || q == null) return false;
        
        if (p.val != q.val) return false;
        
        return isSameTree(p.left, q.left) && isSameTree(p.right, q.right);
    }
}


Other Posts You May Like
Please leave a comment below if you like this post or found some errors, it will help me to improve my content.

Comments

Popular Posts from this Blog

Shell Script to find sum, product and average of given numbers - The Coding Shala

Single Number 3 LeetCode Solution - The Coding Shala

LeetCode - Number of Good Pairs Solution - The Coding Shala

Shell Script to Create a Simple Calculator - The Coding Shala

Java Method Overloading - The Coding Shala