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Grokking the Coding Interview Patterns in Python

Generate Parentheses

Explore how to generate all valid combinations of balanced parentheses for a given number. Learn to understand the problem constraints and implement the solution using Python coding patterns related to subsets and combinations, enhancing your ability to solve similar interview questions.

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Statement

For a given number, n, generate all combinations of balanced parentheses.

Constraints:

  • 1≤1 \leq n ≤10\leq 10

Examples

Understand the problem

Let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:

Generate Parentheses

1.

Which is a valid combination of balanced parentheses when n = 2?

A.

()()

(())

((()

B.

(())

))((

()()

C.

()()

(())

1 / 3

Figure it out!

We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.

Sequence - Vertical
Drag and drop the cards to rearrange them in the correct sequence.
1
2
3
4
5

Try it yourself

Implement your solution in main.py in the following coding playground. We have provided a useful code template in the other file, that you may build on to solve this problem.

Python
usercode > main.py
def generate_combinations(n):

    

    result = []



    # Replace this placeholder return statement with your code



    return result
Generate Parentheses