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Thread: Help!!

  1. #1
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    Default Help!!

    I need your help.
    for example I input 3 elements

    Enter any number= 1
    Enter any number= 2
    Enter any number= 3
    public int getNum(){
            if(n<=99){
                for(int i=0;i<n;i++){
                     System.out.print("Enter any number: ");
                     ar[i]=br.nextInt();
                }                 
            }
            else
                System.out.print("Out of Bound!!");
            return n;
        }
    The output will be:
    1 2 3

    suppose I want to insert 6 in the position of 2 and the output is
    1 6 2 3
    and if I delete position 3 the output is
    1 6 3

    This is a sample code for Insert and Delete.

    Can someone help me to explain this following code of insert and delete

        public void Insert(){
            int j;
            if(pos<=n)
            {
                for( j=n;j>=pos;j--){
                    ar[j+1]=ar[j];}
                System.out.print("Insert a new Element : ");
                ar[j+1] = br.nextInt();
                n++;
     
            }
        else
            System.out.println("Invalid Position");
        }
     
        public void Delete(){
            int j;
            if(pos<=n)
            {
                for(j=pos;j<n;j++){
                ar[j]=ar[j+1];
                }
               System.out.println();
                System.out.println("Element Deleted");
                n--;
            }
     
        else
            System.out.println("Invalid Position");
        }

  2. #2
    Super Moderator jps's Avatar
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    Default Re: Help!!

    I would expect an insert method to accept two parameters, like the value to insert and the index number of where to insert it.
    I would expect a delete method to accept one parameter, the index number to delete.
    (but those are just my opinions)

    Work on one method at a time. What is it you are stuck on?

  3. #3
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    Default Re: Help!!

    Using better variable names and adding comments to the code would help explain what is being done and will help you remember when you look at the code after some time away from it.

    Other than explaining to you what those simple methods are doing, what do you need help with? What specifically is your question?

  4. #4
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    Default Re: Help!!

    this looks like an assignment on stacking