Bug 533

Summary: The match shows one male matches with two female
Product: Group 13 Dating App System (vibing.com) Reporter: Varun <avbalaji2-c>
Component: Stable MatchingAssignee: Phudis Dawieang <pdawieang2-c>
Status: RESOLVED FIXED    
Severity: normal    
Priority: ---    
Version: 1   
Hardware: PC   
OS: Windows   

Description Varun 2020-12-07 21:11:08 HKT 
In test_5, 5 males and 5 females are provided. However, one male (Marko) got matched with two females (Dusika and Karry)

The score of each match and the matching is attached below.

Ivan ranking:
Karry score: 84
Betty score: 80
Maggy score: 48
Andela score: 27
Dusica score: 27

Timur ranking:
Karry score: 88
Maggy score: 32
Dusica score: 25
Andela score: 20
Betty score: 20

Marko ranking:
Karry score: 88
Betty score: 79
Andela score: 69
Maggy score: 38
Dusica score: 33

John ranking:
Karry score: 88
Betty score: 79
Maggy score: 37
Andela score: 30
Dusica score: 30

Blake ranking:
Betty score: 79
Karry score: 77
Andela score: 72
Maggy score: 36
Dusica score: 29

Timur ranking:
Karry score: 88
Maggy score: 32
Dusica score: 25
Andela score: 20
Betty score: 20

Marko ranking:
Karry score: 88
Betty score: 79
Andela score: 69
Maggy score: 38
Dusica score: 33

Andela ranking:
Ivan score: 70
Timur score: 69
Marko score: 30
John score: 30
Blake score: 47

Dusica ranking:
Ivan score: 34
Timur score: 39
Marko score: 30
John score: 30
Blake score: 43

Karry ranking:
Ivan score: 85
Timur score: 88
Marko score: 94
John score: 94
Blake score: 77

Maggy ranking:
Ivan score: 51
Timur score: 39
Marko score: 32
John score: 32
Blake score: 49

Betty ranking:
Ivan score: 78
Timur score: 74
Marko score: 37
John score: 37
Blake score: 25

Blake & Andela
Marko & Dusica
Marko & Karry
Timur & Maggy
John & Betty
Comment 1 Phudis Dawieang 2020-12-07 21:29:49 HKT 
The bug really happens, thanks for pointing it out. 

The bug occurs from the Stable_Matching.stable_match(). In the case that better partner is found, the new partner should be removed and added to the list of male who does not have pair yet. However, the previous code added the better partner to the list, thus causing the duplicate case.

Again, thank you for pointing this out. The bug is resolved.