Paths from root with a specified sum | Simple | Story To Code | GfG POTD
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This is the 37th Video of our Playlist "Binary Tree : Popular Interview Problems".
In this video we will try to solve a very good problem - Paths from root with a specified sum (GFG POTD)
I will explain the intuition so easily that you will never forget and start seeing this as cakewalk EASYYY.
We will do live coding after explanation and see if we are able to pass all the test cases.
Also, please note that my Github solution link below contains both C++ as well as JAVA code.
Problem Name : Paths from root with a specified sum (GFG POTD)
Company Tags : Microsoft
My solutions on Github(C++ & JAVA) : https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Tree/Paths%20from%20root%20with%20a%20specified%20sum.cpp
GFG Link : https://www.geeksforgeeks.org/problems/paths-from-root-with-a-specified-sum/1
My DP Concepts Playlist : https://youtu.be/7eLMOE1jnls
My Graph Concepts Playlist : https://youtu.be/5JGiZnr6B5w
My GitHub Repo for interview preparation : https://github.com/MAZHARMIK/Interview_DS_Algo
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Approach Summary : The solve method traverses the binary tree using a depth-first search approach. It keeps track of the current path's sum (curr_sum) and appends each node's value to the temporary vector temp. If the current path's sum equals the given sum, the path is added to the result vector. The method then recursively calls itself for the left and right subtrees of the current node. Finally, it backtracks by removing the last element from the temporary vector temp to explore other paths.The printPaths method initializes an empty vector temp and calls the solve method to find paths with the specified sum. The result vector is then returned. In summary, the code aims to find all paths in a binary tree where the sum of node values equals a given target sum and stores these paths in the result vector.
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✨ Timelines✨
00:00 - Introduction
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