20+ A1 BioChem Labs Interview Questions and Answers

Code to check if linked list is palindrome without using any other data structure and in a single traversal.

• Traverse the linked list using two pointers, one slow and one fast

• Reverse the first half of the linked list while traversing

• Compare the reversed first half with the second half of the linked list

Program for snake traversal of binary tree

• Use a stack to keep track of nodes to be visited

• Start with the root node and push it onto the stack

• While the stack is not empty, pop a node and print its value

• If the level is even, push the left child first and then the right child onto the stack

• If the level is odd, push the right child first and then the left child onto the stack

Burn one rope from both ends and the other rope from one end to measure 45 minutes.

• Burn one rope from both ends and the other rope from one end simultaneously.

• When the first rope burns out (30 minutes), light the other end of the second rope.

• When the second rope burns out (15 minutes), 45 minutes have passed.

• Total time taken to burn both ropes: 30 + 15 = 45 minutes.

To get roll numbers of same subjects, filter the data by subject and extract roll numbers.

• Filter the data by subject using a loop or filter function

• Extract roll numbers of filtered data using map or forEach function

• Store the roll numbers in an array of strings

There are 10 boxes, each containing 100 tablets.

• Total number of tablets is 1000 (10 boxes x 100 tablets).

• The number of boxes and tablets can be changed based on the requirement.

• The tablets can be of any type or size.

• The boxes can be labeled or numbered for easy identification.

To get the average of marks in Excel, use the AVERAGE function.

• Select the range of cells containing the marks

• Type =AVERAGE(

• Select the range of cells again

• Close the parentheses and press Enter

• The average of the marks will be displayed