Rust Tutorials

How to print Diamond Pattern in Rust

How to print Diamond Pattern in Rust ?

Answer

To print a Diamond Pattern in Rust, we use nested loops. The outer loop controls the rows and the inner loops control the spaces and stars (*) to form the pattern.

✐ Examples

1 Diamond Pattern

In this example,

We define a function print_diamond that takes the desired number of rows n as a parameter.
We use two nested for loops, where the outer loop runs from 1 to n and the inner loops control the spaces and stars in each row.
Within the inner loops, we calculate the number of spaces and stars based on the current row number to form the diamond pattern.

Rust Program

fn print_diamond(n: i32) {
    for i in 1..=n {
        let spaces = " ".repeat((n - i) as usize);
        let stars = "*".repeat((2 * i - 1) as usize);
        println!("{}{}", spaces, stars);
    }
    for i in (1..n).rev() {
        let spaces = " ".repeat(i as usize);
        let stars = "*".repeat((2 * i - 1) as usize);
        println!("{}{}", spaces, stars);
    }
}

fn main() {
    print_diamond(5);
}

Output

    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *

Summary

In this tutorial, we learned How to print Diamond Pattern in Rust language with well detailed examples.

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