Homesome Interview Questions and Answers

Reverse a linked list by changing the pointers direction

• Start with three pointers: current, prev, and next

• Iterate through the linked list, updating the pointers to reverse the direction

• Update the head of the linked list to be the new tail

Given a target amount and a list of coin denominations, find the minimum number of coins needed to make up the target amount.

• Use dynamic programming to solve this problem efficiently.

• Create a dp array to store the minimum number of coins needed for each amount from 0 to the target amount.

• Iterate through the coin denominations and update the dp array accordingly.

• Return the value at the target amount index of the dp arra...read more

Design a system to handle data flow efficiently

• Identify the sources of data and how they will be collected

• Determine the processing steps required for the data

• Consider the storage and retrieval mechanisms for the data

• Implement data validation and error handling procedures

• Optimize the data flow for performance and scalability