Nested Loops

Nested loops are loops inside loops. They allow us to perform operations on multi-dimensional data structures or execute repeated actions within an iterative process. Practice these problems to strengthen your understanding of nested loops.

Practice Problems

Problems Index

Print a square pattern of * with n rows and columns.
Print a right-angled triangle pattern of *.
Generate a multiplication table up to n.
Create a pyramid pattern of numbers.
Print the following pattern for n:
```
1
12
123
1234
```
Input a list of lists and calculate the sum of all elements.
Print all pairs of elements from two lists.
Find the transpose of a 2D matrix.
Print a pattern where each row contains numbers from 1 to the row number.
Generate a checkerboard pattern with alternating 0 and 1.

Try It Yourself

Now that you’ve reviewed the problems, practice them below using the code runner!

1. Square Pattern

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Print a square pattern of * with n rows and columns.

Output:

2. Right-Angled Triangle

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Print a right-angled triangle pattern of *.

Output:

3. Multiplication Table

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Generate a multiplication table up to n.

Output:

4. Pyramid Pattern

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Create a pyramid pattern of numbers.

Output:

5. Number Pattern

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Print a pattern where each row contains consecutive numbers from 1 to row number.

Output:

6. Matrix Sum

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Input a list of lists and calculate the sum of all elements.

Output:

7. Element Pairs

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Print all pairs of elements from two lists.

Output:

8. Matrix Transpose

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Find the transpose of a 2D matrix.

Output:

9. Number Pattern 2

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Print a pattern where each row contains numbers from 1 to the row number.

Output:

10. Checkerboard Pattern

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Generate a checkerboard pattern with alternating 0 and 1.

Output: