Examples with DefaultSolver jp.ac.kobe_u.cs.cream.DefaultSolver used on opensource projects

Example 1 with DefaultSolver

use of jp.ac.kobe_u.cs.cream.DefaultSolver in project symja_android_library by axkr.

the class Solve method integerSolve.

public static IAST integerSolve(final IAST list, final IAST variables) {
    IAST result = F.List();
    TreeMap<ISymbol, IntVariable> map = new TreeMap<ISymbol, IntVariable>();
    // Create a constraint network
    Network net = new Network();
    for (int i = 1; i < variables.size(); i++) {
        if (variables.get(i) instanceof ISymbol) {
            map.put((ISymbol) variables.get(i), new IntVariable(net));
        }
    }
    IAST temp;
    IntVariable lhs;
    IntVariable rhs;
    for (int i = 1; i < list.size(); i++) {
        if (list.get(i) instanceof IAST) {
            temp = (IAST) list.get(i);
            if (temp.isAST2()) {
                lhs = integerVariable(net, map, temp.arg1());
                rhs = integerVariable(net, map, temp.arg2());
                if (temp.isAST(F.Equal, 3)) {
                    lhs.equals(rhs);
                } else if (temp.isAST(F.Unequal, 3)) {
                    lhs.notEquals(rhs);
                } else if (temp.isAST(F.Greater, 3)) {
                    lhs.gt(rhs);
                } else if (temp.isAST(F.GreaterEqual, 3)) {
                    lhs.ge(rhs);
                } else if (temp.isAST(F.LessEqual, 3)) {
                    lhs.le(rhs);
                } else if (temp.isAST(F.Less, 3)) {
                    lhs.lt(rhs);
                } else {
                    return null;
                }
            }
        }
    }
    Solver solver = new DefaultSolver(net);
    solver.findAll(new SolutionHandler() {

        @Override
        public void solved(Solver solver, Solution solution) {
            if (solution != null) {
                IAST temp = F.List();
                for (Entry<ISymbol, IntVariable> entry : map.entrySet()) {
                    temp.append(F.Rule(entry.getKey(), F.integer(solution.getIntValue(entry.getValue()))));
                }
                result.append(temp);
            }
        }
    }, 10000);
    // }
    return result;
}