M
Size: a a a
M
К
JF
JF
NM
JF
JF
К
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*
JF
JF
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JF
JF
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replace_substring(String, To_Replace, Replace_With, Result) :-
( append([Front, To_Replace, Back], String)
-> append([Front, Replace_With, Back], R),
replace_substring(Back, To_Replace, Replace_With, Result)
; Result = String
).
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