Siemens PLC Programmer Interview Questions and Answers

Questions based on c++,DSA

Q1. Reverse a linked list
Ans. 
To reverse a linked list, iterate through the list and change the direction of pointers.
• Iterate through the linked list while keeping track of the previous, current, and next nodes.

• Update the pointers of each node to reverse the direction.

• Set the new head of the reversed list as the original list's tail.
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Q2. Return the largest and the second largest number
Ans. 
To return the largest and second largest numbers from an array
• Sort the array in descending order

• Return the first element as the largest number and the second element as the second largest number
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