Find Champion II | Easy Explanation | Leetcode 2924 | codestorywithMIK
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This is the 57th Video of our Playlist "Graphs : Popular Interview Problems" by codestorywithMIK
In this video we will try to solve a simple Graph problem : Find Champion II | Easy Explanation | Leetcode 2924 | codestorywithMIK
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 : Find Champion II | Easy Explanation | Leetcode 2924 | codestorywithMIK
Company Tags : will update later
My solutions on Github(C++ & JAVA) - https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Graph/Find Champion II.cpp
Leetcode Link : https://leetcode.com/problems/find-champion-ii
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Summary :
The goal of this approach is to identify the "champion" node in a directed graph, defined as a node with no incoming edges (indegree = 0). Here's how it works:
Indegree Calculation:
Initialize an array indegree to track the number of incoming edges for each node.
For each edge in the graph (u to v), increment the indegree of the destination node v.
Champion Identification:
Traverse through all nodes and identify those with indegree = 0.
If exactly one node has indegree = 0, it is the champion.
If more than one node has indegree = 0, return -1, as there is no unique champion.
Edge Cases:
If no node has indegree = 0, return -1 (no champion exists).
✨ Timelines✨
00:00 - Introduction
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