day11 done

This commit is contained in:
attila 2018-12-11 20:51:53 +01:00
parent e0c7e9f1a6
commit c0b3f6dc47
3 changed files with 339 additions and 0 deletions

268
day11/Cargo.lock generated Normal file
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day11/Cargo.toml Normal file
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[package]
name = "day11"
version = "0.1.0"
authors = ["attila <daf276@gmx.de>"]
[dependencies]
arrayfire = "3.6.0"

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day11/src/main.rs Normal file
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extern crate arrayfire;
use arrayfire::{Array, Dim4, convolve2};
fn main() {
let grid = Array::new(&init_grid(), Dim4::new(&[300, 300, 1, 1]));
let mut max = -99999;
let mut max_size = 0;
let mut y_of_max_array = 0;
let mut x_of_max_array = 0;
let mut result = vec![0; 90000];
for size in 1..300 {
let kernel = arrayfire::constant(1.0, Dim4::new(&[size, size, 1, 1]));
convolve2(&grid, &kernel, arrayfire::ConvMode::DEFAULT, arrayfire::ConvDomain::AUTO).host(&mut result);
let mut max_value = -99999;
let mut max_x = 0;
let mut max_y = 0;
for y in (size / 2) as usize..(300 - (size / 2) as usize) {
for x in (size / 2) as usize..(300 - (size / 2) as usize) {
if result[y * 300 + x] > max_value {
max_value = result[y * 300 + x];
max_y = y;
max_x = x;
}
}
}
if max_value > max {
max = max_value;
y_of_max_array = max_y;
x_of_max_array = max_x;
max_size = size;
}
println!("{} {} {}", max_x, max_y, max_value);
}
println!("{} {} {}", x_of_max_array, y_of_max_array, max_size);
}
fn init_grid() -> [i32; 90000] {
let mut grid: [i32; 90000] = [0; 90000];
for y in 0..300 {
for x in 0..300 {
grid[y * 300 + x] = power(x as i32, y as i32);
}
}
grid
}
fn power(x: i32, y: i32) -> i32 {
let rack_id = x + 10;
let power_level = (rack_id * y + 7672) * rack_id;
let partial = (power_level / 100) % 10;
(partial - 5)
}