
Interviewers often care about how you think as much as the final answer. Begin by restating the problem in your own words and asking about important constraints or examples. Describe the approach you plan to use before writing code, and mention one alternative you considered. As you work, explain the purpose of each section, the data you are tracking, and the trade-offs you are making. If you make a mistake, pause, identify what changed your understanding, and correct it calmly. After the solution works, review its time and memory needs, then suggest how you would test it in a real system. Clear communication shows that you can collaborate, make decisions with incomplete information, and help a team understand difficult work. Practice by solving short problems aloud and reviewing your explanations for structure and clarity.