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Prolog program that defines a relation count(A,L,N) that counts into N the number of occurrences of the element A in the list L

Posted By: Milind Mishra     Category: Artificial Intelligence     Views: 4419

Prolog program that defines a relation count(A,L,N) that counts into N the number of occurrences of the element A in the list L.

Code for Prolog program that defines a relation count(A,L,N) that counts into N the number of occurrences of the element A in the list L in Artificial Intelligence

trace
domains
    x = integer
    l = integer*
    
predicates
    count(x,l,x)
    
clauses
    count(Element,[],0).
    
    count(Element,[X|List],OccurNum) :-
        Element = X,!,
        count(Element,List,OccurNum1),
        OccurNum = OccurNum1 + 1.
        
    count(Element,[X|List],OccurNum) :-
        count(Element,List,OccurNum).
        
Output :

Goal: count(2,[2,3,2,5,2,6],N)

N=3
1 Solution

Goal: count(2,[],N)

N=0
1 Solution
  
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Milind Mishra
Milind Mishra author of Prolog program that defines a relation count(A,L,N) that counts into N the number of occurrences of the element A in the list L is from India.
 
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