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DATE 2017-02-01

LEARN

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MESSAGE
DATE 2017-02-09
FROM Ruben Safir
SUBJECT Re: [Learn] Does this look like a Euler Path to you?
From learn-bounces-at-nylxs.com Thu Feb 9 23:41:03 2017
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this might look better

http://www.geeksforgeeks.org/eulerian-path-and-circuit/


On 02/09/2017 11:18 PM, Ruben Safir wrote:
> I'm looking at this and thinking, how can it even work.
>
> graph[x-1][y-1] ++;
>
> this is undefined all together...
> It came from here. I wanted to add a code example to the paper without
> writing it myself.
>
> http://samplecodebank.blogspot.com/2011/04/eulerian-path-in-c.html
>
>
> #include
> #include
>
> using namespace std;
>
> int graph[100][100];
> int n, x, y, steps;
> list path;
>
> void walk(int pos){
> for(int i = 0; i < n; i++){
> if(graph[pos][i] > 0){
> graph[pos][i] --;
> graph[i][pos] --;
> walk(i);
> break;
> }
> }
> path.push_back(pos+1);
>
> }
>
> int main(){
>
> cin >> n;
> for(int i = 0; i < n; i++){
> cin >> x >> y;
> graph[x-1][y-1] ++; //we are using zero index
> }
> walk(0);
> while(!path.empty()){
> cout << path.back() << ' ';
> path.pop_back();
> }
> }
>
>


--
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