updated processBatch function

contents.swift

   func processBatch(){
        
        for _ in 0..<queue.getCount(){
            batchSum -= queue.peek()!
          //1
            print("deueuing \(queue.dequeue()!.format())")
            
        }
        //2
        print("deueuing \(batchSum!.format())")
        resetBatchSum()
    }