Example: Input - 1 -> 2 -> 3 -> 4 -> 5, Output - 3
# Create a sample linked list: 1 -> 2 -> 3 -> 4 -> 5 head = Node(1) head.next = Node(2) head.next.next = Node(3) head.next.next.next = Node(4) head.next.next.next.next = Node(5) Tcs Coding Questions 2021
Given an array of integers and a target sum, count the number of pairs with that sum. Example: Input - 1 -> 2 -> 3
for num in arr: current_sum = max(num, current_sum + num) max_sum = max(max_sum, current_sum) Example: Input - 1 ->
Example: Input - [-2, 1, -3, 4, -1, 2, 1, -5, 4], Output - 6
def is_palindrome(s): return s == s[::-1]
print(find_middle_element(head)) # Output: 3