Insert a node in a Singly Linked List at a given position (Implementation)

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Best series for DS & Algo. I am also 10 yrs java exp guy. Was looking for DS & Algo free course over YouTube with java implementation and found this. Hats Off To You Man...Excellent Work. GOD BLESS YOU :)

shubhamagarwal

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FashionTales

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kashifsiddiqui

Thanks a lot Dinesh Varyani. This has helped me a lot.

dineshr

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nirmesh

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raz

at 5:47, couldnt you use a for loop instead of a while loop at line 57?
for(int count = 1; count < position - 1; count++){}

hobojoesnr.

Sir Thank you very much for this but why there is so less likes ?

pushkarkumaryadav

@Dinesh Varyani why cant u discuss the time and space complexity for each operations insert, delete etc...

poojithakumaran

What if the given position is invalid? Should we write an if statement at the beginning of insert ()?

sambeetrath

You can make the following changes in your code if you want to check if a given position is valid or not
private void insertAtPosition(int value, int position, SinglyLinkedList singlyLinkedList){

ListNode node = new ListNode(value);
if (position == 0 || position >
System.out.println("Error, Invalid Position");
return;
}
}

karentechnologies

public void insert(int position, int data){

ListNode newNode=new ListNode(data);
if(position==1){
newNode.next=head;
head=newNode;
}
else{
ListNode previous=head;
int count = 1;
while(count < position-1);{
previous=previous.next;
count++;
}
ListNode current=previous.next;
previous.next=newNode;
newNode.next=current;

}
}

Exception in thread "main" Cannot read field "next" because "previous" is null
at

nishantpatill

What will happen if we add at certain position like 5 when list is empty

abhishekpatel

I just started learning DSA and I am curious on why your count starts from one and not zero. Any particular reason why?

chinomsojohnson

sir notes or ppt dona interiview keliye read karna hai apke easy hai notes plz

mr.kdrama.o

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