Solve 2024/day02

2024/day01/part1.ts

@@ -6,10 +6,11 @@ import {
 	words,
 	mapToInt,
 	sort,
+    self,
 } from '@helper';
 
 const input = await loadData();
 const parsed = lines(input, (l) => mapToInt(words(l)));
-const nums = transpose(parsed).map((x) => sort(x, (x) => x));
+const nums = transpose(parsed).map((x) => sort(x, self));
 
 console.log(sumBy(nums[0], (num1, index) => Math.abs(num1 - nums[1][index])));

2024/day02/part1.ts

@@ -0,0 +1,15 @@
+import { lines, loadData, words, mapToInt, pair, isInRange } from '@helper';
+
+const input = await loadData();
+const parsed = lines(input, (l) => mapToInt(words(l)));
+
+const isSafe = (nums: number[]) => {
+	const diffs = pair(nums).map(([num1, num2]) => num1 - num2);
+
+	const increasing = diffs.every((d) => isInRange(1, d, 3));
+	const decreasing = diffs.every((d) => isInRange(-3, d, -1));
+
+	return increasing || decreasing;
+};
+
+console.log(parsed.filter(isSafe).length);

2024/day02/part2.ts

@@ -0,0 +1,30 @@
+import {
+	lines,
+	loadData,
+	words,
+	mapToInt,
+	pair,
+	isInRange,
+	range,
+	removeIndex,
+} from '@helper';
+
+const input = await loadData();
+const parsed = lines(input, (l) => mapToInt(words(l)));
+
+const isSafe = (nums: number[]) => {
+	const diffs = pair(nums).map(([num1, num2]) => num1 - num2);
+
+	const increasing = diffs.every((d) => isInRange(1, d, 3));
+	const decreasing = diffs.every((d) => isInRange(-3, d, -1));
+
+	return increasing || decreasing;
+};
+
+const saveEntries = parsed.filter((nums) => {
+	const removedNums = range(nums.length).map((i) => removeIndex(nums, i));
+	const allNums = [nums, ...removedNums];
+	return allNums.some(isSafe);
+});
+
+console.log(saveEntries.length);

helpers/index.ts

@@ -30,6 +30,7 @@ export * from './matrix/getCoordinate';
 export * from './matrix/getNextToCoordinate';
 export * from './matrix/newMatrix';
 export * from './sort';
+export * from './removeIndex';
 // TODO: Test set value at coord
 export * from './matrix/setValueAtCoord';
 export * from './commonChars';
@@ -64,3 +65,4 @@ export {
 	lines,
 	words,
 };
+export const self = <T>(x: T) => x

helpers/removeIndex.ts

@@ -0,0 +1,11 @@
+/**
+ * Removes the element at the specified index from an array without modifying the original array.
+ * 
+ * @param arr - The original array.
+ * @param index - The index of the element to remove.
+ * @returns A new array with the specified element removed.
+ */
+export const removeIndex = <T>(arr: T[], index: number) => [
+	...arr.slice(0, index),
+	...arr.slice(index + 1),
+];

input/2024/day02.debug

@@ -0,0 +1,6 @@
+7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9

runNewest

@@ -5,7 +5,7 @@ DAY=1
 PART=1
 
 DATA=debug
-SUBMIT=false
+COPY=false
 
 PROJECT_ROOT="$PWD"
 while [ ! -f "$PROJECT_ROOT/README.md" ]; do
@@ -25,7 +25,7 @@ usage() {
 	echo "  -d, --day      Day (default: 1) (range: 1-25)"
 	echo "  -p, --part     Part (default: 1) (options: 1 2)"
 	echo "  -D --data      Use real input data or just debug (default: debug) (options: debug solve)"
-	echo "  --submit       Submit the answer (default: false)"
+	echo "  -c --copy      Copy the answer (default: false)"
 	exit 1
 }
 
@@ -75,8 +75,8 @@ while [[ $# -gt 0 ]]; do
 			DATA="$2"
 			shift 2
 			;;
-		--submit)
-			SUBMIT=true
+		-c|--copy)
+			COPY=true
 			shift
 			;;
 		*)
@@ -125,6 +125,6 @@ export PART=$PART
 
 SOLUTION=$(bun run "$FILE_PATH" "$INPUT_PATH" | tee /dev/tty)
 
-if [ "$SUBMIT" == true ]; then
-	aoc submit -d "$DAY" -y "$YEAR" "$PART" "$SOLUTION"
+if [ "$COPY" == true ]; then
+	echo "$SOLUTION" | sed -r 's/\x1B\[[0-9;]*m//g' | wl-copy
 fi