Sha256: 9c6ccb45011adcdb7d4f425f0cd1b098fbd7b5f3e445ecfd7e4a738b07d4ebed
Contents?: true
Size: 1.39 KB
Versions: 180
Compression:
Stored size: 1.39 KB
Contents
struct Board {
pieces: Vec<Vec<char>>,
num_rows: usize,
num_cols: usize
}
impl Board {
fn annotated(&self) -> Vec<String> {
(0..self.num_rows).map(|y| self.annotated_row(y)).collect()
}
fn annotated_row(&self, y: usize) -> String {
self.pieces[y]
.iter()
.enumerate()
.map(|(x,&c)| if c == ' ' {self.count_neighbouring_mines_char(x, y)} else {c})
.collect::<String>()
}
fn count_neighbouring_mines_char(&self, x: usize, y: usize) -> char {
let mut count = 0;
for x1 in neighbouring_points(x, self.num_cols) {
for y1 in neighbouring_points(y, self.num_rows) {
let piece = self.pieces[y1][x1];
if piece == '*' {
count += 1;
}
}
}
if count == 0 {
' '
} else {
(('0' as u8) + count) as char
}
}
}
pub fn annotate(pieces: &[&str]) -> Vec<String> {
let pieces_vec = pieces.iter().map(|&r| r.chars().collect()).collect();
Board {pieces: pieces_vec, num_rows: pieces.len(), num_cols: pieces[0].len()}.annotated()
}
fn neighbouring_points(x: usize, limit: usize) -> Vec<usize> {
let mut offsets = vec![x];
if x >= 1 {
offsets.push(x-1);
}
if x+2 <= limit {
offsets.push(x+1);
}
offsets
}
Version data entries
180 entries across 180 versions & 1 rubygems