GATE CSE
First time here? Checkout the FAQ!
x
0 votes
89 views
When the graph contain negetive weight edges but no negetive weight cycle, in this case can dijkstra leads to incorrect result?
asked in Algorithms by Boss (5.1k points)   | 89 views

1 Answer

+2 votes
Why dijkastra provide wrong result for -ve edge. Because dijkastra supports increments of distance, when it goes from one vertex to other. In the middle if we get some -ve edge, this assumption will be violated. That is why dijkastra gives incorrect result for some cases.

Dijkastra doesnot check if there is a -ve edge or not. If it's assumtion is true, dijkastra even give correct result with -ve weight edges too.
answered by Veteran (49.4k points)  
Top Users Jan 2017
  1. Debashish Deka

    7172 Points

  2. Habibkhan

    4696 Points

  3. Vijay Thakur

    4308 Points

  4. sudsho

    4090 Points

  5. saurabh rai

    4024 Points

  6. Arjun

    3292 Points

  7. santhoshdevulapally

    3066 Points

  8. GateSet

    3016 Points

  9. Bikram

    3014 Points

  10. Sushant Gokhale

    2892 Points

Monthly Topper: Rs. 500 gift card

18,838 questions
23,808 answers
51,589 comments
20,148 users