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Program to compare character and string

Posted By: Milind Mishra     Category: Artificial Intelligence     Views: 2910

Program to compare character and string.....

Code for Program to compare character and string in Artificial Intelligence

predicates
    start
    comp_str(string,string)
    comp_char(char,string)
goal
    clearwindow,
    start.
clauses
    start:-
        comp_str("abcd","dcab"),
        write("equal"),nl.
    
    start:-
        write("not equal"),nl.

    comp_str(Str1,Str2):-
        Str1 <> "",
        frontchar(Str1,Char1,Rest1),
        comp_char(Char1,Str2),
        comp_str(Rest1,Str2).

    comp_str(Str1,Str2):-
        Str1 = "".        

    comp_str(Str1,Str2):-
        fail.

    comp_char(Char1,Str2):-
        frontchar(Str2,Char2,Rest2),
        Char1 <> Char2,
        Rest2 <> "",
        comp_char(Char1,Rest2).

    comp_char(Char1,Str2):-
        frontchar(Str2,Char2,Rest2),
        Char1 = Char2.

    comp_char(Char1,Str2):-
        fail.
  
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Milind Mishra
Milind Mishra author of Program to compare character and string is from India.
 
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