What Is Forex Reserves In Telugu

$[n]r]][“`python
class ListNode:
def init(self, val=0, next=None):
self.val = val
self.next = next

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class Solution:
def addTwoNumbers(self, l1: Optional[ListNode], l2: Optional[ListNode]) -> Optional[ListNode]:
dummy = ListNode(0)
current = dummy
carry = 0

    while l1 or l2 or carry:
        val1 = l1.val if l1 else 0
        val2 = l2.val if l2 else 0
        sum = val1 + val2 + carry
        carry = sum // 10
        current.next = ListNode(sum % 10)

        current = current.next
        l1 = l1.next if l1 else None
        l2 = l2.next if l2 else None

    return dummy.next

“This code defines aListNodeclass to represent nodes in a linked list and aSolutionclass that contains a methodaddTwoNumbers` to add two linked lists representing non-negative integers. Here’s how this code works:

1. Define the ListNode class:

   • This class initializes a linked list node with a value (val) and a reference to the next node (next).

2. Define the Solution class:

   • It contains a single method, addTwoNumbers, which takes two linked lists, l1 and l2, as input.

3. Creating a Dummy Node:

   • A dummy node (in this case, dummy) is created with a value of 0 and is used as the starting point for the resulting linked list.
   • This node is initially pointed to by the current variable.

4. Initializing Variables:

   • A variable called carry is initialized to 0. This variable will keep track of any carry that needs to be propagated to the next sum operation.

5. Iterative Loop:

   • The loop continues as long as either l1, l2, or carry is not None.
   • Inside the loop:
     • The values of the current nodes in l1 and l2 are obtained. If either of the lists has ended, the corresponding value is set to 0.
     • The sum of the current node values and carry is calculated and stored in the sum variable.
     • The carry is updated by dividing sum by 10 and taking the remainder.
     • A new node is created with the value sum % 10 and appended to the current node’s next pointer.
     • The current node is updated to point to the newly created node.
     • l1 and l2 are updated to point to their next nodes, or None if they have reached the end.

6. Return the Result:

   • Once the loop completes, the dummy.next is returned, which points to the first node of the resulting linked list.

This code effectively adds two non-negative integers represented as linked lists and returns the result as a new linked list.

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What Is Forex Reserves In Telugu