thank you very much I have some more question
there is a problem I got no solution and i dont knew why.
Could you tell me in which function(s) is the problem?
the contraints I did as you told me. I change only GLP_UP; FX
startModelBuilding(nbRows : Int, nbCols : Int){
lp = GLPK.glp_create_prob()
GLPK.glp_add_cols(lp, nbCols)
}
def setBounds(colId : Int, low : Double, up : Double) {
GLPK.glp_set_col_bnds(lp, colId+1, GLPKConstants.GLP_DB, low, up)
}
def setUnboundUpperBound(colId : Int) {
GLPK.glp_set_col_bnds(lp, colId+1, GLPKConstants.GLP_LO, 0,1000)
}
def addObjective(coef : Array[Double], col : Array[Int], minMode :
Boolean = true) {
GLPK.glp_set_obj_name(lp, "objective");
GLPK.glp_set_obj_dir(lp, if (minMode) GLPKConstants.GLP_MIN else
GLPKConstants.GLP_MAX)
for (i <- 0 to col.size-1) {
GLPK.glp_set_obj_coef(lp, i,coef(i))
}
}
def solveModel() : Int = {
println("solveModel");
val iocp = new glp_iocp();
GLPK.glp_init_iocp(iocp);
iocp.setPresolve(
GLPKConstants.GLP_ON);
val ret = GLPK.glp_intopt(lp, iocp);
if (ret == 0) {
sol = Array.tabulate(nbCols)(col => GLPK.glp_mip_col_val(lp,col
+1))
objectiveValue = GLPK.glp_mip_obj_val(lp)
ret
} else {
System.out.println("The problem could not be solved");
ret
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