988. Smallest String Starting From Leaf | leetcode daily challenge | DSA | Hindi | shashwat

Problem Name:
988. Smallest String Starting From Leaf

Problem Statement:
You are given the root of a binary tree where each node has a value in the range [0, 25] representing the letters 'a' to 'z'.

Return the lexicographically smallest string that starts at a leaf of this tree and ends at the root.

As a reminder, any shorter prefix of a string is lexicographically smaller.

For example, "ab" is lexicographically smaller than "aba".
A leaf of a node is a node that has no children.

Problem link:
https://leetcode.com/problems/smalles...

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