Monday, 30 March 2026

SDE GRAPH is BIPARRIATE GRPAH

 class Solution {

  public:

    bool DFS(int node,int cc,vector<vector<int>>&adj,vector<int>&color,vector<bool>&visited)

    {

        visited[node]=1;

        for(int x:adj[node]){

            if(color[x]==cc)return false;

        }

        color[node]=cc;

        int nextc=0;

        if(!cc)nextc=1;

        for(int x:adj[node]){

            if(!visited[x])if(!DFS(x,nextc,adj,color,visited))return false;

        }

        return true;

    }

    bool isBipartite(int V, vector<vector<int>> &edges) {

        // Code here

        vector<vector<int>>adj(V);

        for(auto e:edges){

            adj[e[0]].push_back(e[1]);

            adj[e[1]].push_back(e[0]);

        }

        vector<int>color(V,-1);

        vector<bool>visited(V,false);

        return DFS(0,0,adj,color,visited);

    }

};

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