blob: d09e35727d265910c3793aaba7e81c65a8d217ea (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
pub mod error;
pub mod prelude;
pub use crate::prelude::Result;
use std::fs::File;
use std::io::BufReader;
use std::io::prelude::*;
pub fn greeting() -> Result<()> {
println!("Hello, Irenes!");
Ok(())
}
pub fn read_lines_file(filename: &str) -> Result<Vec<String>> {
let file = File::open(filename)?;
let mut reader = BufReader::new(file);
let mut buffer = String::new();
let mut input: Vec<String> = Vec::new();
loop {
reader.read_line(&mut buffer)?;
if buffer.len() == 0 {
break;
}
let mut line_copy = String::new();
match buffer.strip_suffix("\n") {
Some(stripped) => {
line_copy.push_str(stripped);
}
None => {
line_copy.push_str(&buffer);
}
}
input.push(line_copy);
buffer.clear();
}
Ok(input)
}
pub fn trim_lines<'a>(lines: &'a Vec<String>) -> Vec<&str> {
let mut trimmed_lines = Vec::new();
for line in lines {
match line.strip_suffix("\n") {
Some(stripped) => {
trimmed_lines.push(stripped);
}
None => {
trimmed_lines.push(line);
}
}
}
trimmed_lines
}
pub fn group_lines_by_blanks(lines: Vec<&str>) -> Vec<Vec<&str>> {
let mut all_groups = Vec::new();
let mut current_group = Vec::new();
for line in lines {
if line.len() == 0 {
all_groups.push(current_group);
current_group = Vec::new();
} else {
current_group.push(line);
}
}
if current_group.len() > 0 {
all_groups.push(current_group);
}
all_groups
}
pub fn read_int_file(filename: &str) -> Result<Vec<i64>> {
let file = File::open(filename)?;
let mut reader = BufReader::new(file);
let mut buffer = String::new();
let mut input: Vec<i64> = Vec::new();
loop {
reader.read_line(&mut buffer)?;
if buffer.len() == 0 {
break;
}
let item = buffer.trim().parse::<i64>()?;
buffer.clear();
input.push(item);
}
Ok(input)
}
|