add 2022 day1 (p1 and 2) and 2024 day1 (p1 and 2)

2022/day1/Cargo.lock

@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "day1"
+version = "0.1.0"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.167"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09d6582e104315a817dff97f75133544b2e094ee22447d2acf4a74e189ba06fc"

2022/day1/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "day1"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+libc = "0.2.167"

2022/day1/src/main.rs

@@ -0,0 +1,44 @@
+use std::io::{stdin, Read};
+use libc::{clock_gettime, timespec, CLOCK_PROCESS_CPUTIME_ID};
+
+fn main() {
+
+    let mut biggest = 0;
+    let mut data = String::new();
+    stdin().read_to_string(&mut data).unwrap();
+    let mut begin = timespec {
+        tv_sec: 0,
+        tv_nsec: 0,
+    };
+    unsafe {
+        clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &mut begin);
+    };
+
+    let calories = data.replace('\n', " ");
+    let lines = calories.split("  ");
+    for line in lines {
+        let mut cal_count = vec![];
+        let nums = line.split_whitespace();
+        for num in nums {
+            let num: i32 = num.trim().parse().unwrap();
+            cal_count.push(num);
+        }
+        let total_sum: i32 = cal_count.iter().sum();
+        if total_sum > biggest {
+            biggest = total_sum;
+        }
+    }
+
+    let mut end = timespec {
+        tv_sec: 0,
+        tv_nsec: 0,
+    };
+    unsafe {
+        clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &mut end);
+    };
+    println!("{biggest:?}");
+    println!(
+        "time: {:.6}ms",
+        (end.tv_nsec - begin.tv_nsec) as f32 / 1000.0 / 1000.0
+    );
+}