Given an array of integers and a target sum, count the number of pairs with that sum.
for char in s: if char_count[char] == 1: return char
while fast and fast.next: slow = slow.next fast = fast.next.next Tcs Coding Questions 2021
Here are some TCS coding questions from 2021, along with a useful piece of code for each:
Example: Input - 1 -> 2 -> 3 -> 4 -> 5, Output - 3 Given an array of integers and a target
# 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)
print(find_middle_element(head)) # Output: 3 Tcs Coding Questions 2021
Given a string, find the first non-repeating character in it.