Day 7EasyCustom

Filled and Hollow Rectangle

Basic Nested LoopsSolved Oct 24, 2025

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Problem

Problem Description

The task is to print two fundamental patterns using nested loops, given dimensions N (rows) and M (columns):

Filled Rectangle: Print a solid block of characters (e.g., *).
Hollow Rectangle: Print a character only on the boundary (first/last row/column).

Examples

1. Filled Rectangle (N=3, M=5)

2. Hollow Rectangle (N=4, M=5)

Solve it yourself before you look

Reading the solution first feels like progress, but it makes the next similar problem — and the interview version — much harder, because you skipped the part where you figure it out. Give it an honest 20–30 minutes. Stuck? Re-read the pattern, watch the concept video, or try the brute force first.