How to resolve the algorithm Kernighans large earthquake problem step by step in the Rust programming language

Published on 12 May 2024 09:40 PM
#Rust

How to resolve the algorithm Kernighans large earthquake problem step by step in the Rust programming language

Table of Contents

Problem Statement

Brian Kernighan, in a lecture at the University of Nottingham, described a problem on which this task is based. You are given a a data file of thousands of lines; each of three whitespace separated fields: a date, a one word name and the magnitude of the event. Example lines from the file would be lines like:

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Kernighans large earthquake problem step by step in the Rust programming language

Source code in the rust programming language

fn main() -> Result<(), Box<dyn std::error::Error>> {
    use std::io::{BufRead, BufReader};

    for line in BufReader::new(std::fs::OpenOptions::new().read(true).open("data.txt")?).lines() {
        let line = line?;

        let magnitude = line
            .split_whitespace()
            .nth(2)
            .and_then(|it| it.parse::<f32>().ok())
            .ok_or_else(|| format!("Could not parse scale: {}", line))?;

        if magnitude > 6.0 {
            println!("{}", line);
        }
    }

    Ok(())
}

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