Writing recursive functions using OPL script

Yes, recursive functions are supported by OPL script. One such function to find the sum of first N positive integers could be written in an execute block as such:


execute{
  function recursiveSum(x){
    writeln("Finding sum upto " + x + " ...");
    var result;
    if(x > 1){  
     result = x + recursiveSum(x-1);
    }
    else{
     result = 1;
    }
    writeln("Sum upto " + x + "=" + result);
    return(result);
  }
  var testNumber = 5;
  var testResult = recursiveSum(testNumber);
  writeln("Sum of the first " + testNumber + " positive integers=" + testResult);
}