5C problem solving

• Clarify Communicate with the interviewer, remove ambiguity in the questions and determine the scope of the answer
• Core objects Determine the categories involved in the problem, and the mapping relationship between the categories
• Cases Determine the scenarios and functions that need to be implemented in the topic
• Classes Fill in the classes involved in the question by way of class diagrams
• Correctness Check your design to see if it meets the key points