Advent of Code 2021 - Day 1: Sonar Sweep

sonar_sweep.rs

fn count_increments(measurements: &[u64]) -> usize {
    measurements.windows(2).filter(|&w| w[1] > w[0]).count()
}

fn count_three_measurement_increments(measurements: &[u64]) -> usize {
    count_increments(
        &measurements
            .windows(3)
            .map(|w| w.iter().sum())
            .collect::<Vec<u64>>(),
    )
}