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README.md | 4 years ago |
README.md
step_iterator
Instructions
-
Create an
Iterator
(by implementing thestd::iter::Iterator
trait) that iterates through the values frombeg
toend
(including end) in the indicatedsteps
.-
The name of your iterator will be
StepIterator
and it must be generic so you can use any integer value: i8,..,i64, u8,..,u64 or floating point number f32,..,f64 -
If the steps do not allow to attain the end of the sequence, only the last value inferior to the end of the series will be returned (See Usage)
-
-
Define the associated function:
new
which creates a new Step iterator:
Expected Functions and Structures
pub struct StepIterator<T> {
...
}
use std::ops::Add;
impl StepIterator<T> {
pub fn new(beg: T, end: T, step: T) -> Self {
}
}
impl std::iter::Iterator for StepIterator<T> {
}
Usage
Here is a program to test your function.
use step_iterator::*;
fn main() {
for v in StepIterator::new(0, 100, 10) {
print!("{},", v);
}
println!();
for v in StepIterator::new(0, 100, 12) {
print!("{},", v)
}
println!();
}
And its output:
$ cargo run
0,10,20,30,40,50,60,70,80,90,100,
0,12,24,36,48,60,72,84,96,
$