1. Write an SQL query to return the second highest marks in a student database.
2. Explain React's virtual DOM.
3. What is the time complexity of the bubble sort algorithm?
4. Write a JavaScript function to sort an array of numbers.
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1. Write an SQL query to return the second highest marks in a student database.
2. Explain React's virtual DOM.
3. What is the time complexity of the bubble sort algorithm?
4. Write a JavaScript function to sort an array of numbers.