Find the first circular tour that visits all petrol pumps

Find the first circular tour that visits all petrol pumps is a DSA topic. In plain words you use it for a short Find the first circular tour that visits all petrol pumps example in a short dry-run on paper. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Find the first circular tour that visits all petrol pumps example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Find the first circular tour that visits all petrol pumps.

From the example next to this theory: Find the first circular tour that visits all petrol pumps — a linked list chains nodes with next pointers instead of contiguous indexes.

Trap: only saying “Find the first circular tour that visits all petrol pumps” with no example. Fix that before you talk about advanced DSA.

Viva: what is Find the first circular tour that visits all petrol pumps? Then show the smallest Find the first circular tour that visits all petrol pumps example you can type. Then name the trap.

Exam tip

What is Find the first circular tour that visits all petrol pumps? Show this: the smallest Find the first circular tour that visits all petrol pumps example you can type. Trap: only saying “Find the first circular tour that visits all petrol pumps” with no example.

Example

class Node:
    def __init__(self, val, next=None):
        self.val = val
        self.next = next

head = Node(1, Node(2, Node(3)))
cur = head
while cur:
    print(cur.val, end=" -> " if cur.next else "\n")
    cur = cur.next

Find the first circular tour that visits all petrol pumps — a linked list chains nodes with next pointers instead of contiguous indexes.

Short notes

DefFind the first circular tour that visits all petrol pumps — a short Find the first circular tour that visits all petrol pumps example in a short dry-run on paper.
Rulethe smallest Find the first circular tour that visits all petrol pumps example you can type
Traponly saying “Find the first circular tour that visits all petrol pumps” with no example
Usea short dry-run on paper

Find the first circular tour that visits all petrol pumps

From the example next to this theory: Find the first circular tour that visits all petrol pumps — a linked list chains nodes with next pointers instead of contiguous indexes.

Trap: only saying “Find the first circular tour that visits all petrol pumps” with no example. Fix that before you talk about advanced DSA.

Viva: what is Find the first circular tour that visits all petrol pumps? Then show the smallest Find the first circular tour that visits all petrol pumps example you can type. Then name the trap.

Exam tip

Example

class Node:
    def __init__(self, val, next=None):
        self.val = val
        self.next = next

head = Node(1, Node(2, Node(3)))
cur = head
while cur:
    print(cur.val, end=" -> " if cur.next else "\n")
    cur = cur.next

Find the first circular tour that visits all petrol pumps — a linked list chains nodes with next pointers instead of contiguous indexes.

Short notes

DefFind the first circular tour that visits all petrol pumps — a short Find the first circular tour that visits all petrol pumps example in a short dry-run on paper.
Rulethe smallest Find the first circular tour that visits all petrol pumps example you can type
Traponly saying “Find the first circular tour that visits all petrol pumps” with no example
Usea short dry-run on paper

Find the first circular tour that visits all petrol pumps

Example

Short notes

Questions

Find the first circular tour that visits all petrol pumps

Example

Short notes

Questions