54 lines
1.4 KiB
Rust
54 lines
1.4 KiB
Rust
/**
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* Abbreviations from tintenalarm.de
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*/
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use std::fs::File;
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use std::io;
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use std::io::{BufRead, BufReader};
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fn main() {
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let table = read_days("weekdays.txt").expect("Error in Function read_days:");
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for line in table {
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if line.len() == 0 {
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continue;
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};
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let mut max_same = 0;
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for i in 0..(line.len() - 1) {
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for j in i + 1..line.len() {
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max_same = max_same.max(begins_with_num_same_chars(&line[i], &line[j]));
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}
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}
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println!("{}\t{:?}", max_same + 1, line);
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}
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}
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fn read_days(filename: &str) -> io::Result<Vec<Vec<String>>> {
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let f = File::open(filename)?;
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let reader = BufReader::new(f);
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let mut table: Vec<Vec<String>> = Vec::new();
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for line in reader.lines() {
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let mut days: Vec<String> = Vec::with_capacity(7);
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for day in line?.split_whitespace() {
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days.push(day.to_string());
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}
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table.push(days);
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}
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Ok(table)
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}
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fn begins_with_num_same_chars(str_a: &str, str_b: &str) -> u32 {
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let mut num = 0;
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for (pos, char_a) in str_a.chars().enumerate() {
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match str_b.chars().nth(pos) {
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Some(char_b) => {
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if char_a == char_b {
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num = num + 1;
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} else {
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return num;
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}
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}
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None => return num,
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}
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}
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num
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}
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