krotki days 1..3 (#54)

Author: Krotki

2024/01/krotki/part1.v

@@ -0,0 +1,27 @@
+module main
+
+import math
+import os
+
+fn main() {
+	lines := os.get_lines()
+
+	mut col1 := []i64{}
+	mut col2 := []i64{}
+
+	for l in lines {
+		a, b := l.split_once('   ') or { panic('Could not split a line ${l}') }
+		col1 << a.parse_int(10, 32)!
+		col2 << b.parse_int(10, 32)!
+	}
+
+	col1.sort()
+	col2.sort()
+
+	mut sum := i64(0)
+	for i := 0; i < col1.len; i++ {
+		sum += math.abs(col2[i] - col1[i])
+	}
+
+	println(sum)
+}

2024/01/krotki/part2.v

@@ -0,0 +1,25 @@
+module main
+
+import os
+import arrays
+
+fn main() {
+	lines := os.get_lines()
+	mut col1 := []i64{}
+	mut col2 := []i64{}
+
+	for l in lines {
+		a, b := l.split_once('   ') or { panic('Could not split a line ${l}') }
+		col1 << a.parse_int(10, 32)!
+		col2 << b.parse_int(10, 32)!
+	}
+
+	counts := arrays.map_of_counts[i64](col2)
+
+	mut sum := i64(0)
+	for n in col1 {
+		sum += n * counts[n]
+	}
+
+	println(sum)
+}

2024/02/krotki/part1.v

@@ -0,0 +1,22 @@
+module main
+
+import os
+import arrays
+
+fn main() {
+	input := os.get_lines()
+
+	mut count := 0
+	for line in input {
+		levels := line.split(' ').map(it.int())
+		diff := arrays.window(levels, size: 2).map(it[1] - it[0])
+		within_bounds := diff.all(it <= 3 && it >= -3)
+		positive := diff.all(it > 0)
+		negative := diff.all(it < 0)
+		if within_bounds && (positive || negative) {
+			count++
+		}
+	}
+
+	println(count)
+}

2024/02/krotki/part2.v

@@ -0,0 +1,27 @@
+module main
+
+import os
+import arrays
+
+fn main() {
+	input := os.get_lines()
+
+	mut count := 0
+	for line in input {
+		levels := line.split(' ').map(it.int())
+		for i := 0; i < levels.len; i++ {
+			mut lvl := levels.clone()
+			lvl.delete(i)
+			diff := arrays.window(lvl, size: 2).map(it[1] - it[0])
+			within_bounds := diff.all(it <= 3 && it >= -3)
+			positive := diff.all(it > 0)
+			negative := diff.all(it < 0)
+			if within_bounds && (positive || negative) {
+				count++
+				break
+			}
+		}
+	}
+
+	println(count)
+}

2024/03/krotki/part1.v

@@ -0,0 +1,19 @@
+module main
+
+import os
+import regex
+
+fn main() {
+	input := os.get_raw_lines_joined()
+
+	mut re := regex.regex_opt('mul\\(\\d+,\\d+\\)')!
+	list := re.find_all_str(input)
+
+	mut sum := 0
+	for l in list {
+		a, b := l.trim('mul()').split_once(',')?
+		sum += a.int() * b.int()
+	}
+
+	println(sum)
+}

2024/03/krotki/part2.v

@@ -0,0 +1,33 @@
+module main
+
+import os
+import regex
+
+fn main() {
+	input := os.get_raw_lines_joined()
+
+	mut re := regex.regex_opt(r"(do\(\))|(don't\(\))|(mul\(\d+,\d+\))")!
+	list := re.find_all_str(input)
+
+	mut is_enabled := true
+	mut sum := 0
+	for l in list {
+		match l {
+			'do()' {
+				is_enabled = true
+				continue
+			}
+			"don't()" {
+				is_enabled = false
+				continue
+			}
+			else {}
+		}
+		if is_enabled {
+			a, b := l.trim('mul()').split_once(',')?
+			sum += a.int() * b.int()
+		}
+	}
+
+	println(sum)
+}

known/2024/01/krotki/part1.out

@@ -0,0 +1 @@
+11

known/2024/01/krotki/part2.out

@@ -0,0 +1 @@
+31

known/2024/02/krotki/part1.out

@@ -0,0 +1 @@
+2

known/2024/02/krotki/part2.out

@@ -0,0 +1 @@
+4