Water Jug Problem Source Code - Prolog Programming Language - Artificial Intelligence

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water(X,Y):-X>4,Y<3,write('4L jug OVERFLOW'),nl.

water(X,Y):-X<4,Y>3,write('3L jug OVERFLOW'),nl.

water(X,Y):-X>4,Y>3,write('Both jugs FULL'),nl.

water(X,Y):-(X=:=0,Y=:=0,nl,write('4L=0 and 3L=3(step taken:Fill 3L jug.)'),YY is 3,water(X,YY));

(X=:=0,Y=:=0,nl,write('4L=4 and 3L=0(step taken:Fill 4L jug.)'),XX is 4,water(XX,Y));

(X=:=2,Y=:=0,nl,write('4L=2 and 3L=0(step taken:GOAL Reached.)'));

(X=:=4,Y=:=0,nl,write('4L=1 and 3L=3(step taken:Pour water from 4L jug to 3L jug.)'),XX is X-3,YY is 3,water(XX,YY));

(X=:=0,Y=:=3,nl,write('4L=3 and 3L=0(step taken:Pour water from 3L jug to 4L jug.)'),XX is 3,YY is 0,water(XX,YY));

(X=:=1,Y=:=3,nl,write('4L=1 and 3L=0(step taken:Empty 3L jug.)'),YY is 0,water(X,YY));

(X=:=3,Y=:=3,nl,write('4L=3 and 3L=3(step taken:Fill 3L jug.)'),YY is 3,water(X,YY));

(X=:=3,Y=:=3,nl,write('4L=4 and 3L=2(step taken:Pour water from 3L jug to 4L jug until 4L jug is FULL.)'),XX is X+1,YY is Y-1,water(XX,YY));

(X=:=1,Y=:=0,nl,write('4L=0 and 3L=1(step taken:Pour water from 4L jug to 3L jug.)'),XX is Y,YY is X,water(XX,YY));

(X=:=0,Y=:=1,nl,write('4L=4 and 3L=1(step taken:Fill 4L jug.)'),XX is 4,water(XX,Y));

(X=:=4,Y=:=1,nl,write('4L=2 and 3L=3(step taken:Pour water from 4L jug to 3L jug until 3L jug is FULL.)'),XX is X-2,YY is Y+2,water(XX,YY));

(X=:=2,Y=:=3,nl,write('4L=2 and 3L=0(step taken:Empty 3L jug.)'),YY is 0,water(X,YY));

(X=:=4,Y=:=2,nl,write('4L=0 and 3L=2(step taken:Empty 4L jug.)'),XX is 0,water(XX,Y));

(X=:=0,Y=:=2,nl,write('4L=2 and 3L=0(step taken:Pour water from 3L jug to 4L jug.)'),XX is Y,YY is X,water(XX,YY)).